| 1 | Please call on us if ( ). | |||
| it is conven-ient for you | it is conven-ient of you | you are conven-ient | you are conven-ient of | |
| 2 |
A: Dinner is ready! B: OK, I'm ( ). |
|||
| going | coming | staying | leaving | |
| 3 | She got full marks in the exam. She ( ) very hard. | |||
| must study | must have studied | should study | should have studied | |