They often have a class meeting _______ 3 p.m. _______ Friday afternoon.
| A．at; / | B．at; on |
| C．in; on | D．on；on |
She often ___________ her parents do housework at home.
| A．asks | B．makes | C．helps | D．lets |
She got __________ gifts for her birthday yesterday.
| A．a lot | B．a lots of | C．lot of | D．lots of |
What did you buy during your last vacation? I __________ a hat.
| A．buy | B．buyed | C．bought | D．was buy |
--- ___________ there any sharks in the aquarium? --- No, we didn’t see any.
| A．Did | B．Had | C．Have | D．Were |
It’s not good for people __________ waste water (污水) into the river.
| A．to put | B．putting | C．to pour | D．pouring |