Fill in the Blanks

Concerned is correct - it means 'worried, troubled, or involved' indicating the staff made efforts out of concern for students' attendance during the bus strike. Systematic means organized but doesn't capture the caring motivation. Integrated suggests combining efforts, which isn't the point. Respective means 'belonging to each' which doesn't fit. Concerned efforts shows the staff's caring approach.

The sentence contrasts precision with quickness in decision-making. 'Quick decision' is a common collocation meaning choices made rapidly. 'Action' would also work, but 'decision' better pairs with the theme of precision versus speed in choices.

For walking in hills, you need shoes that are strong and durable. 'Sturdy' means firmly built, solid, and robust - exactly what's needed for rough terrain. While 'good' or 'comfortable' are positive, they don't convey the necessary strength and durability for hill walking.

Parliamentary democracy requires following rules consistently. 'Adherence' means attachment or loyalty to rules/principles. 'Subjection' implies being dominated, 'liability' means responsibility/debt, neither fits the context of democratic discipline.

In grief context, friends offer comfort and solace. 'Consolation' specifically means comfort given to someone who is grieving or disappointed. 'Happiness' is the opposite of what's needed, 'solution' doesn't address emotional support, and 'friendship' is too broad.

Despite his mother's worries, Mohan's behavior was perfect/flawless. 'Impeccable' means faultless or perfect in behavior/appearance. 'Impervious' means unaffected (doesn't fit context), 'imperial' relates to empire, 'imaginable' means conceivable.

The sentence says family ties 'can hardly withstand any strain' - they're weak. 'Tenuous' means weak, insubstantial, or barely holding together. 'Tentative' means uncertain/provisional, 'twisted' means coiled, neither captures the fragility meaning.

Understanding without speaking is 'tacit' - unspoken but understood. 'Tacit' means implied or understood without being stated. 'Oral' means spoken (opposite), 'contractual' means formal agreement, 'placid' means calm.

Family planning curbs population growth. 'Increase' means growth or rise in numbers. 'Spread' means extension over area, 'spurt' means sudden burst - both are less precise for sustained population growth.

‘Decadence’ means ‘deterioration or degradation’ and ‘apparent’ means ‘visible’.

‘Impact’ means ‘effect’ and reflected means ‘visible' or 'apparent’.

‘Hastened’ means ‘accelerated’ and ‘devastating’ refers to ‘destroying’.

‘Fall behind’ means ‘fail to keep up pace’ and ‘stay abreast’ means ‘updated or informed’.

We use ‘would have’ to talk about action and event that was possible in the past, although it did not in fact happen.

‘Used to be able to’ means had the ability to do something in the past, although you don’t have this ability now.