Though iPhone 4 is such a hit product, I won’t buy one unless its after service ______.
A. was improved B. gets improved C. is improving D. had got improved
The 3G cell-phone must be of great use to ____wants to get the information through the
Internet quickly．
A． who B． whoever C． whomever D． whichever
—Can you give me some advice on what I said just now?
—Sorry, my mind _____．
A． has wondered B． had wondered C． is wondering D． was wondering
I’d appreciate _____ if you would like to teach me how to use the computer．
A． that B． this C． it D． you
The government has to close those small factories to prevent the water of the river ______.
A. polluting B. from polluting C. being polluted D. polluted
There are _____ products to be sold in the factory store. Which of the following is not correct?
A. a large number of B. a large amount of C. quantities of D. a great many
