In our school library, there _____a number of books on science andthe number of them _______growing larger and larger.

.—I’ve got to go now.—Must you ?I ______you could stay for dinner with us

The mostexciting thing for him was hefinally found two tinned fruits inseemed to him to be a servant’s bedroom.

Students should do everything they can __their study.

It was 80 years before Christopher Columbus crossed the AtlanticZheng He sailed to East Africa