1 the students suggest the posters on energy saving a make b to make c making 2 his hobbies are reading comics playing video games a or b and c but 3 she is that her english speaking is becoming better a pleased worried c sure 4 what are you doing lan? i'm looking my keys a after b for c at 5 i suggest that we english regularly in class a speaking b must speak c should speak 6 people can save natural resources by using energy a sunny b solar c sun 7 they didn't go to the circus the tickets were too expensive a because b as c a&b 8 if she him at the club she will give him a present a will see b sees c doesn't see 9 what do you we do to reduce air in the city a pollution b polluting c polluted 10 she is looking forward her parents at christmate a to meet b meeting c to meeting 11 solar panels are installed on the roof of a house the energy from the sun a to receive b receive c receiving d to get 12 it is very dark here could you turn the lights? a off b on c down 13 the sun can be an and clean source of power a effect b effective c effectively 14 if we go on water we will be a shortage of water in a few decades a wasting b to waste c waste 15 there is a faucet in the bathroom a drip b dripping c to drip 16 i want to see the of the environment from the local authorities a protect b protection c protective 17 i think we should save our resources a natural b nature c naturally 18 we should use bulbs instead of ordinary bulbs a saving-energy b energy-saving c saving 19 he isn't very rich he spends a lot of money helping the poor a but b and c so 20 we should be aware of the problem of a polluting b polluted c pollution