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
推荐题目
A computer cannot remember who_____; it simply does what _________.
#103663
A
will use it; it is told
B
uses it; it has told
C
used it; it is told
D
has used it; it told
The College Entrance Examination __________near, so you should be prepared for it.
#104312
A
is drawing
B
draws
C
drew
D
has drawn
—Take this medicine three times a day，Tom!—Do I have to take it？It ________ so terrible.
#99741
A
is tasting
B
is tasted
C
tastes
D
has tasted
Experiments of this kind ___in both the U．S and Europe well before the Second World War
#100340
A
had conducted
B
have conducted
C
have been conducted
D
had been conducted