He failed in the exam, and I wonder ___ he studied hard in the school

Scientists say it may be five or six years _____ it ispossible to test this medicine on human patients

eeting ______ over, I found her seated at the desk and ______ to music.

There is a big dog _______to a fence outside the house.

What do you want to do next We have half an houruntil the basketball game— ___________ Whatever you want to do is fine withme