－Why hasn' t Jack come back yet?________ anything have happened to him?

－I'm not sure, but I guess someyhing ________．

May; must have

Can; may have

Must; may

should; might have

－Let's go for a picnic this weekend together with our classmates, OK?

－________．I love getting close to nature．

I couldn' t agree more

That's all right

out of the question

I'm afraid not

How can I help ________ if people don't read the instructions?

that

it

that

them

Unfortanately, when I got to her flat, she ________, so we had only a moment for a few words

just left

had just left

has just left

was just leaving

Some groups still have difficulties ________ access ________ social services．

gain; in

gaining; to．

to gain; to

gaining; of

During the camp trip, children were fascinated by ________ wonders of ________ nature．

/;/

/; the

the;/

the; the

－We'd better go downstairs right now for lunch．

－________ They serve food 24 hours a day．

Hurry up!

Take your time．

No way!

It doesn't matter．

Nowhere else, as his mother told us, ________ except the cabin in the backyard．

did he go

he did go

went he

he went

We're all ready to put it into operation, ________, we're going to take action as fast as possible．

on the whole

in general

in conclusion

in other words

－Your flight was quite late last night．

－Yes, it was midnight ________ our plane finally got to Jinan．

that

when

since

until