It’s no use _____ my husband ________ money. He won’t take your advice.

______ do you go shopping, Mary? — Twice a week.

The best way to make a kid to be independent is to put him in a position _______ he has no one else to refer to ．

It was in 1969 ______ two Americans went to the moon by spaceship.[ ]

They were ________ busy ________ with each other ________ the time.