The old man __________ in Tibet for two years as a volunteer teacher；it is an experience he often mentions.
#101367
A
served
B
serves
C
is serving
D
has served
推荐题目
—How long _______ at this job? —Since 1990.
#99296
A
were you employed
B
have you been employed
C
had you been employed
D
will you be employed
Jim ______ Jenny every night for the last month since he first met her in London, and they seem to be getting along very well.
#100186
A
dated
B
had dated
C
was dating
D
has been dating
The policeman came up to the house, whose door was open, _____ there for a while, and went in.
#100895
A
to stand
B
standing
C
stood
D
stand
He said that his friend ________there three days before, but she was not there_______.
#103216
A
had been; now
B
has been; then
C
had been; then
D
was; now
—I heard the peasants here very poor in the past.—Yes,but there great changes in the past few years.
#104537
A
have been;have been
B
have been;were
C
were;have been
D
were;were