To protect the environment, most supermarkets in China stopped ________ free plastic bags．

A．to send

B．sending

C．providing

D．to provide．

You should praise your son．________ , he works harder than before．

A．Above all

B．After all

C．As a result

D．First of all

Learning a foreign language needs a certain ________ , no matter how easy it is．

A．effort

B．luck

C．excuse

D．chance

True friend is someone ________ gives his hand and touches your heart．

A．whose

B．which

C．when

D．who

John fell asleep ________ he was listening to the music．

A．after

B．before

C．as soon as

D．while

It's the third time I ________ him this month．

A．had seen

B．see

C．saw

D．have seen

Maybe the disaster(災難)can destroy(毀壞)our homes, but ________ can destroy the love in our hearts．

A．something

B．everything

C．anything

D．nothing

The price of a hotel room ________ cheap．About 80 yuan a night ________ enough．

A．is; is

B．are; is

C．is; are

D．are; are

________ boy with glasses has ________ bad cold today．

A．The;/

B．The; a

C．A; the

D．/; the

Teachers often tell their students ________ across the road when the traffic light is red．

A．not go

B．not to go

C．don't go

D．didn't go