He is a friend ______ can help you in time of need.
It didn't take the children long to _______ the correct answer.
Food supplies in the flood-stricken area ______. We must act immediately before there’s none left.
If he ___ me his telephone number yesterday, I ___ able to ring him up now.
Greatly moved by what she said, __________.
The audience gave the performer ______ burst of _______. A.a; applause B. /; applause C. /; applauses D. some; applauses