— Is that girl in purple your sister?
— It __________ be. She’s gone to London a week before.
| A．can’t | B．won’t |
| C．mustn’t | D．needn’t |
—I have no idea what to wear for the singing contest?
—Well, the dress_____ you bought yesterday may be the best choice.
| A．what | B．whom |
| C．where | D．that |
Betty is often seen ____ the old man with his housework.
| A．help | B．to help |
| C．helped | D．helps |
It’s said in the newspaper the 215 more new schools ______ in Zhengzhou by 2020.
| A．are built | B．will be built |
| C．have built | D．were built |
My cousin told me that he could eat three big apples _____.
| A．at time | B．some time |
| C．at a time | D．some times |
There are many shops on _____ sides of the street. You can buy everything you want.
| A．both | B．any | C．either | D．every |