—Car prices have been going down sharply in the last 20 years.—It's not surprising because the law of market ________ the price of a product.
“You ___ not be too careful in the exam. Do and check your papers carefully and you ____ not take your papers out of the examination room after the exam.” the teacher told us before the exam.
When your parents haven’t ____your letter for a long time,they will worry about you.
Thecleverboymadeaholeinthewall,_______hecouldsee______was goingoninsidethe house.
Heisnotsuchaman_______wouldleavehisworkhalfdone.
That was the first time I _______ there and I was impressed by the friendly people very much