---May I go and play with Tom this afternoon, mum? ---No．You can’t go out ______ your homework is being done．

Those who are not active or______ diet is high in fat will put on weight quickly.

 The entire hall burst into a great cheer and applause ______ the Nobel Prize winner appeared on the stage accompanied by the chairman.

My sister was angry ______ what he said.

—— Where did Mary’s parents buy the beautiful vase? —— It was in the same village _______ they spent their holidays last year.