单项选择题
There was a noisy ________ at the back of the hall when the speaker began his address.
单项选择题 The scientists were ________ as they had found not one but three viruses.
单项选择题 Having re-established his authority, tie was ready to renew his ________ more power.
单项选择题 We are ________ faced with the reality that having more people implies a lower standard of living.
