--- Middle school students hardly know anything about shopping online, ____ they?
--- ________. It’s very popular with teenagers.
| A．do; No | B．do; Yes | C．don’t; No | D．don’t; Yes |
--- Why don’t we go climbing tomorrow? --- ___________
| A．You’re great. | B．That’s right |
| C．What a good idea! | D．No, I don’t |
The little girl kept _____ the house, because she wanted to keep it _____.
| A．cleaning; clean | B．cleaning; cleaning |
| C．clean; clean | D．clean; cleaning |
___________ the three questions, which one is the most difficult to answer?
| A．As | B．In | C．Than | D．Of |
The Yellow River is __________ river in China.
| A．the longer | B．the longest | C．the second longest | D．longest |
The students come to school early, but the teachers come __________.
| A．much earlier | B．much early | C．more earlier | D．the earliest |