Mary is _______ of music but I am not.
举一反三
- I a boy. Are you a boy? No, I not. A: am, are B: are, is C: am, am
- Are you young or old? A: Yes, I young. B: No, I am not. C: Young and old. D: I am young.
- As far as I am ________, it is of no importance whether he will go or not．
- Mary and I _______ sisters. A: is B: are C: am D: be
- I am in doubt ______ I should buy it or not. A: if B: what C: whether D: which