Since Shanghai won the right to host the World Expo, over half a million people have volunteered to __________

Since Shanghai won the right to host the World Expo, over half a million people have volunteered to ___________in all the Shanghai Expo projects .

#4701

assist

apply

supply

provide

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“Shall we stop for lunch _____ shall we drive on？” “Let’s stop for lunch, but the driver can’t drink _____ drive.”

#4892

and, and

or, or

and, or

or, and

--- Can I help you ?    --- I’d like to buy a present for my best friend, _______at proper price but of great use.

#4881

that

one

this

.Jenny, your paintings are wonderful. I _____ you learned to paint.

#4747

hadn’t known

didn’t know

won’t know

haven’t known

.---Could I use your telephone? --- Yes, of course you  ________.

#4768

could

will

can

might

“_____ when does the pub stay open？”  “About midnight.”

#4891

Since...

Before

Until...

After

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