一 When did the computer crash?一 This morning, while I the reading materials downloaded from some websites.
#102121
A
have sorted
B
was sorting
C
am sorting
D
had sorted
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---This is the first time I _____ my first picture with my own hands. --- It’s time that you ____ a photo of me.
#101711
A
took; took
B
have taken; took
C
took; will take
D
will take; have taken
--- Haven’t seen you for ages! Where have you been, anywhere ?--- I _______ to New York City. I just got back.
#99265
A
have been sent
B
was sent
C
had been sending
D
would be sent
In order to keep the balance of ecosystem, every possible means _______to deal with the problems of the over-exploiting of natural resources.
#101293
A
has tried
B
has been tried
C
have taken
D
have been taken