--- I think the waiter has forgotten us. We ______ here for an hour! --- I think you’re right. He probably thinks we have already ordered our food.
I suggest you delete the useless files on the computer which _______ too much space.
At first I regretted _____ them to stay, but we soon became great friends.
Most of my friends shop at the stores _____ the goods are very cheap.
Weclimbedhigher_____wemightseethescenesbetter.
According to the factory safety rules, all accidents _____ be reported to the safety officer.