You are probably () me () my sister.
A. confused , with
B. confusing , with
C. confusing , to
D. confused , to

We found him()in the laboratory.A. workB. workingC. to ...

单项选择题We found him()in the laboratory.
A. work
B. working
C. to work

He asked John()he could swim.A. thatB. ifC. howA.A.

单项选择题He asked John()he could swim.
A. that
B. if
C. how

We consider it necessary()tom should improve his behavi...

单项选择题We consider it necessary()tom should improve his behavior.
A. which
B. that
C. what