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
推荐题目
—Brandon, do you know who wanted me on the phone?—Sorry. I don’t know. I ________ a bath in the bathroom.
#104471
A
have had
B
was having
C
had
D
am having
We were told to have our reading room_____ after school.
#103240
A
clean
B
to clean
C
cleaning
D
cleaned
The meeting began two hours ago and because no decision _______, we will continue our discussion tomorrow.
#100021
A
has made
B
has been made
C
had made
D
had been made
- What's up? You didn't pick up the phone just now. - I'm sorry that I dancing with music on, but it's done now.
#101429
A
practised
B
was practising
C
am practising
D
have practlised
This is his only request that the room ______ after being used．
#101544
A
is cleaned
B
will be cleaned
C
would be cleaned
D
be cleaned