The plane left______Shanghai_____a rainy morning.
A.to;in   B.for;on  C.in;on D.at;in
The students are used_____a song at the______of the class.
A.to sing;beginning  B.to singing;start  C.to singing;starting   D.to sing;begining
There is nothing______.
A.for us to worry   Bof us to worry   C.for us to be worried  D.for us to worry about
_____of them has a dictionary and_____one of them can look up words in the dictionary.
A.Each;every    B.Every;each    C.Each;each    D.Every;every