一_________will the fog and haze last?

一I've no idea．there is no sign of an end．

A．How soon B．How far C．How long D．How often

一I don't know _________ she can't go hiking with us．

一She has to do her homework．

A．when B．if C．why D．How

一Did you catch what our head teacher said?

一Sorry，I _________ a phone．

A．will answer B．am answering

C．have answered D．was answering

You never play the piano well _________you practice it again and again．

A．if B．since C．unless D．After

If you put your heart into it，_________ is impossible．

A．anything B．something C．everything D．Nothing

We all know that learning a foreign language _________time and effort．

A．requires B．drops C．greets D．Develops

I have ordered a movie ticket on line and it _________to me soon．

A．was sent B．will be sent

C．has been sent D．is sent

Tom learned the useful lesson from his own personal——．

A．influence B．experience C．difference D．Chance

一Do you still remember our first meeting ten years ago?

—Of course．Everything _________happened yesterday．

A．even though B．as if C．after all D．as soon as

Hate cannot drive out hate，only love _________do that．

A．has to B．must C．should D．Can