_____ his telephone number,she had some difficulty getting in touch with Bill.
A. Not knowing
B. Knowing not
C. Not having known
D. Having not know
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Bamboo is used ______ houses in some places .
A. to build
B. to building
C. to be built
D. being built
The day we looked forward to ______ .
A. come
B. coming
C. has come
D. have come
Whom would you rather ______ the work?
A. to have to do
B. to have do
C. have to do
D. have do
Do you think it any good ______ with him again?
A. to talk
B. talking
C. to talking
D. having talked