Scientists have created GM tomatoes which ______ fresh for 45 days, three times as long as normal tomatoes.
#101941
A
are stayed
B
have been stayed
C
stay
D
stayed
推荐题目
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
The woman insisted that she ______ the mobile phone but none of the supermarket guards would believe her.
#99636
A
should not have stolen
B
should not steal
C
not have stolen
D
had not stolen
When and where to build the new factory ____yet.
#102379
A
is not decided
B
are not decided
C
has not decided
D
have not decided
If we ___________some measures, we might have prevented the environmental pollution.
#103274
A
take
B
had taken
C
took
D
have taken
——Have you read book called Waiting for Anya?—Who _______ it?
#104044
A
writes
B
has written
C
wrote
D
had written