— _____do they surf on the internet ?
—Twice a week.
| A．How soon | B．How much | C．How many | D．How often |
Let’s call up Tim and invite _______ to play football.
| A．he | B．him | C．his | D．himself |
Look, David is writing _______ left hand.
| A．at | B．as | C．for | D．with |
Students who _______ to the party are very excited.
| A．have invited | B．have been invited |
| C．will invited | D．has been invited |
Great changes ________ in China since 1976.
| A．took place | B．were taken place |
| C．have taken place | D．have been taken place |
A concert _______ in our city next month.
| A．is going to hold | B．is going to be held |
| C．will hold | D．is held |