There are some children _____ in the room.
| A．singing | B．sing | C．are singing | D．to sing |
Important sentences are often marked ______ different colours.
| A．in | B．on | C．about | D．by |
Marie’s never been to Tibet, ____she?
| A．is | B．isn’t | C．has | D．hasn’t |
My bike is broken. It needs ____.
| A．to repair | B．to be repaired | C．repaired | D．be repaired |
They were made _______ the whole night.
| A．working | B．work | C．to work | D．worked |
Everything seemed _______ so fast and now it’s all over.
| A．happen | B．happened | C．to happen | D．happening |