You didn’t wait for Mr. Smith last night, did you?—Yes, but we ________. He didn’t return home at all.

________you’ve got a precious chance, you might as well make full use of it[ ]

I seldom watch TV, but listen to the radio a lot.—_______.

It was several minutes ____we realized what was happening-our dog was trapped in a newly-dug tunnel.

Now there is a danger ________ the groundmay fall in under the heavy traffic.