It is compulsory that every motorcyclist ______ a helmet.
A. shall wear B. should wear C. must wear D. need wear
While there are clear signs of a _______ recovery in the global economy, the country still faces a very difficult situation.
A. formal B. raw C. modest D. thorough
---It is _____ he often failed in exams _____ makes his parents worried about him.
---- Actually, they needn’t worry so much.
A. what, that B. that, what C. that , that D. /, that
For a moment nothing happened.Then ________ all shouting together.
A．voices had come B．came voices
C．voices would come D．did voices come
People ________being charged parking, so the decision maker had to compromise.
A. resigned to B. subscribed to C. submitted to D. objected to
Newly released data point to an increase in technology use among children _______ some worry is changing the very nature of childhood.
A. why B. who C. which D. where
