---This is useful machine which was made in ________thirteenth century
| A．a, the | B．an , the | C．/, the | D．the , / |
---Mum,_______ I watch TV?
---No. Unless your homework _______________.
| A．could; finishes | B．can; will finish |
| C．may; is finished | D．can; will be finished |
__________terrible luck he had yesterday!
| A．How | B．what | C．How a | D．What a |
Yesterday I met Jim. We ____________ each other since we _________ middle school.
| A．haven’t seen ; finished | B．haven’t seen; finishing |
| C．hadn’t seen; finishing | D．hadn’t seen; finished |
---When did you return to China?
---_________________.
| A．Until next week | B．Not until next week |
| C．a few days ago | D．for a few weeks |