.Mr. Richard hasn’t got any time to play golf these days,because he is ______in the research of bird language.
#104550
A
devoted
B
concentrated
C
buried
D
spared
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—How long have you been in this office?—Just a few minutes. My cousins__________ here together with me.
#104311
A
have walked
B
had walked
C
walked
D
have been walking
—How anxious Ruby is! I wonder what on earth she ________.—I’m afraid nobody knows. She is always so strange.
#102683
A
has expected
B
will expect
C
will have expected
D
is expecting
----- I’m going to the States. ----- How long ______ you ______ in the States?
#104148
A
are; stayed
B
are; staying
C
have; stayed
D
did; stay
I ____ go to bed ____ the telephone rang.
#103278
A
was about to, when
B
was going to, while
C
would, when
D
was to, while
According to a UN report, some 844 animals and plants ______ in the last 500 years.
#102976
A
disappeared
B
were disappeared
C
have disappeared
D
had been disappeared