—If a="4," b="5," what’s the answer to the question “ a + 2ab +1 =?”
— .
| A．Forty-fifth | B．Forty-five |
C．Twenty-three | D．One hundred and twenty-one |
He realized his mistakes and took action to reduce the loss _______ it was too late.
| A．until | B．when | C．before | D．As |
— Were your parents at home last night?
— No. _______ of us went to my uncle’s birthday party.
| A．None | B．Neither | C．All | D．Both |
—The surgeon hasn’t come back, has he?
—_______, for he _______ Australia since last week and will be back in a week.
| A．No, has been in | B．No, has gone to |
| C．Yes, has gone to | D．Yes, has been in |
Plenty of money has been _________ helping the quake-afflicted people (灾民) in Nepal.
| A．used | B．spent | C．cost | D．Paid |
— That black T-shirt which has Messi’s picture on it______be David. He admires him a lot.
— It _____ be his. He prefers black to other colours.
| A．must, can’t | B．may, can’t |
| C．may, must | D．must, mustn’t |