-When did you get your first pair of skates?-_______.
They have more than 6 ________ books in the library. A. millionB. millions C. millions of
No ________ here! Haven’t you seen the sign? A. smoking B. to smoke C. smokes
They managed ________ the work on time. A. finishing B. finished C. to finish
The physics problem is very difficult. Can you ________? A. work out itB. work it out C. work it on
This computer is the best one ____ the shop, but it is also the most expensive ___all the computers.