----It is _________ ruler. ---- It is not __________ eraser.A. /, an B. a; an C. the; the
My father ________ very hard. A. works B. work
Oliver’s father often goes to other _____________. A. country B. countries
Where does he ____________? A. work B. worker
---Does he go to work ________ plane?---No, by taxi! A. on B. by
I want to _________a singer _______ day. A. is, one B. be, one