He told us that he________the letters in the morning.
A.will post
B.have posted
C.was posting
D.had posted
—Did you catch the school bus this morning?
—No.It when I arrived at the bus stop.
A. is leaving B. has left C. had left D. would leave
I was so sleepy that I didn't know when the alarm clock________.
A.ran off B.went off C.took off D.put off
Many people do not realize the importance of health ________they have fallen.
A.while B.until C.when D.after
—Show me your homework，Dave.
—Sorry，Mrs.Brown.I've ________ it at home.
A.missed B.forgotten
C.lost D.left
—Japanese isn't as________as Chinese.
—Maybe，perhaps it's because Chinese is our native language.
A. easy B. easily C. easier D. easiest
