—Can I help you?
—_________. How do I get to the train station?
| A．Sorry | B．Yes, please | C．OK | D．Sure |
You shouldn’t keep a pet _______________ you have enough time to care for it.
| A．if | B．unless | C．though | D．when |
___________ the young girl ___________ her parents take regular exercise in order to keep fit.
| A．Not ... but | B．Either ... or | C．Neither ... nor | D．Not only ... but also |
Generally speaking, a computer works _______________ a human brain.
| A．more accurately than | B．more accurate than |
| C．as accurate as | D．so accurately as |
Nowadays, children under 1.4 meters _______________ be free to take buses in some cities.
| A．need | B．must | C．shall | D．can |
There are a lot of trees on _______________ sides of Century Avenue in Pudong.
| A．either | B．all | C．both | D．neither |