1. We don’t doubt ___ he can do a good job,concerning his experience.
A. whether
B. that
C. how
D. why
D. and
4. ____ a fine day,we decided to go out for a picnic.
A. Having
B. Being
C. What
D. It being
5. If I had remembered _____ the window,the thief would not have got in.
A. to close
B. closing
C. to have closed
D. having closed