She went to the game late .______she left her ticket at home .
| A．What’s more | B．That is | C．On the contrary | D．To make things worse |
Your English teacher looks very young； He _____ be over 30.
| A．mustn't | B．can't | C．won' t | D．may not |
——Need I clean the room now？
——Yes， you _____ ， but you ______ ask someone to help you.
| A．need， need | B．must， can | C．need， can | D．must， need |
——Don't forget to come to my birthday party tomorrow.——______.
| A．I don't | B．I won't | C．I can't | D．I will |
What do you think ______ an apple ______ to the ground？
| A．cause， to fall | B．to cause， falling |
| C．causing， falling | D．causes， to fall |
Why do you think ______ cut down the big tree？
| A．we can't | B．can't we | C．that we can't | D．that can't we |