Must we go there together at once—______ you ______ he goes there, only one student is needed.

The old photos buried at the bottom of the suitcase________me of those happy old days we had spent together.[ ]

How much are these shoes _________ twenty dollars.

Were you late ________ the meeting—No, I arrived there ten minutes________the meeting started.

Some students often listen to music ___ ___ classes to refresh themselves.[ ]