Can you tell me how many study groupsthere are in aclass— Generally speaking, a class often ___ 8study groups, each with 7 group members.

al evidence began to__________, suggesting that thenew drugs had a wider range of useful activities than had been predicted fromexperiments in animals

She looks very ____because she has a ____weekend.

On his way to the airport，it ________him all of a sudden that he had forgotten his passport.

Food supplies in the flood-stricken area _______We must act immediately before there’s none left