---How many ______ are there?
---There are twenty-eight.
| A．a boy | B．boy | C．boies | D．boys |
________we will have an exam(测试) next week,_____ we have to go over our lessons.
| A．Because, / | B．Because ,so | C．/ , / | D．So, so |
Oh, these shoes are so beautiful! Can I ________?
| A．try it on | B．try on it | C．try on them | D．try them on |
_________ the bridge, you can see the hospital on your right.
| A．Go cross | B．Go across | C．Across | D．Crossing |
I’m looking forward to _________ Beijing.This summer holiday my family are going to_____ the Oympic Sports Center.
| A．visit , visiting | B．visiting, visit |
| C．visit , visit | D．visiting, vsiting |
My friend Tom is always ready _____ others. He often teaches______ English.
| A．to help, my | B．for help , me | C．to help , me | D．for help, my |