If nothing______, the oceans will turn into fish deserts.
#99587
A
does
B
had been done
C
will do
D
is done
推荐题目
（2014年北京市西城区高三5月二模试题）21. — You look great!— I ______ out. Check out my muscles!
#99109
A
will work
B
was working
C
have been working
D
had been working
The geography teacher told his student that the earth ________around the sun .
#101826
A
traveled
B
travels
C
would travel
D
travelling
My dictionary ________ . I have looked for it everywhere but still ______ it .
#104928
A
has lost ; do not find
B
is missing ; do not find
C
has lost ; have not found
D
is missing ; have not found
In the past few years, Chinese scientists ________ great success in the field of space flight.
#103709
A
achieved
B
have achieved
C
won
D
had won
Daniel, you______into things . How can anyone be so clumsy?
#103882
A
always knock
B
are always knocking
C
always look
D
are always looking