We ___________ try our best to fight against pollution.（ ）
| A． |
should |
B． |
may |
C． |
mustn't |
D． |
needn't |
What do you think of Jason？
He has me with his good sense of humour．（ ）
A．impressedB．admiredC．remindedD．warned
The boy has been missing for five days and his parents are worried about his ______．（ ）
A．attentionB．safetyC．actionD．growth
Excuse me， can you tell me the way to the nearest underground station？
Walk straight on you see a white building． It's right there．（ ）
A．thoughB．sinceC．untilD．if
He was advised to eat fewer hamburgers and drink cola to keep fit．（ ）
A．muchB．moreC．fewerD．less
A robot show will be held in July， but knows the date for sure．（ ）
A．nobodyB．everybodyC．anybodyD．somebody