－Look at these black clouds．It ________ soon．

－Sure．If only we ________ out．

is raining; didn't come

is to rain; won't start

will rain; haven't started

is going to rain; hadn't come

________ we can have clean drinking water lies in ________ effective measures will be taken by the government about water pollution．

Whether; that

If; that

Whether; what

If; what

Tom overslept this morning and didn't get up until 11am because he ________ to work, it's Sunday today．

didn't need to go

needn't go

needn't have gone

needn't to go

－When did you find your wallet?

－It was at noon ________ I played football on the playground．

that

when

then

which

It's really ________ type I have been after, but I'd like to give it ________ second thought．

a;/

a; the

the; a

the; the

－Tom, how about going for a picnic this weekend?

－________．I love getting close to nature．

I'm afraid not

I couldn't agree more

It's well done

I don't think so

I was really anxious about you．You ________ home without a word．

mustn't have left

shouldn't have left

couldn't have left

needn't have left

Wilma became the first American woman to win three olympic gold medals in track, ________ made her mother very proud．

it

that

which

this

She took her son, ran out of the house, ________ him in the car and drove quickly to the nearest doctor's office．

putting

put

to put

having put

He has called several times this morning．________, there is something very urgent．

Really

Especially

Obviously

Terribly