You should have put the milk into the icebox, I expect it ______ undrinkable.
| A．became | B．had become | C．has become | D．becomes |
Spokesman has that there is no Chinese crew on the ship hijacked by Somali pirates.
| A．confirmed | B．proved | C．confused | D．refused |
They work well together－her steadiness(稳健) acts as a(n) to his clever but often impractical ideas.
| A．award | B．belief | C．balance | D．contrary |
Ever since their quarrel, there has been an unpleasant in the office.
| A．circumstance | B．surroundings | C．condition | D．atmosphere |
Having checked the doors were closed, and _____ all the nights were off , the woman opened the door to her bedroom.
| A．why | B．that | C．when | D．where |
In this experiment, they are wakened several times during the night, and asked to report what they _____.
| A．had just been dreaming | B．are just dreaming |
| C．just dreamt | D．have just been dreaming |