. ---- How long ____ at this job? ---- Since 1990.
#102924
A
were you employed
B
have you been employed
C
had you been employed
D
will you be employed
推荐题目
Ladies and gentlemen, please fasten your seat belts. The plane__________.
#102288
A
takes off
B
is taking off
C
has taken off
D
took off
Great as Newton was, many of his ideas _______ today and are being modified by the work of scientists of our time.
#102473
A
are to challenge
B
may be challenged
C
have been challenged
D
are challenging
The whole family _______ to Shanghai for holiday next week.
#103016
A
is going
B
are going
C
goes
D
have gone
  He is too careless and he _______ keys.
#104138
A
always lost  
B
always loses
C
is always losing
D
will always lose