—I had been working till 4:00 a.m. to prepare a report for my boss.
—____ you look very tired.
| A．No doubt | B．No hurry | C．No wonder | D．No need |
The Spring Festival falls ________ the first day of the Chinese Lunar year.
| A．in | B．at | C．on | D．for |
Do you still remember the chicken farm _____ we visited the other day?
| A．where | B．when | C．that | D．what |
It is diving _____ great speed that often causes serious accidents.
| A．on | B．at | C．for | D．in |
______ is necessary for everyone to obey the traffic rules.
| A．That | B．This | C．What | D．It |
___ H1N1 flu from spreading, our government has taken some effective measures.
| A．Prevent | B．Preventing | C．Prevented | D．To prevent |