______ there are living creatures in the outer space as those on Earth hasn’t been proved so far.
| A．When | B．How | C．If | D．Whether |
The last __________ of the play was very impressive.
| A．view | B．sight |
| C．scenery | D．scene |
You are __________ careful than your brother. You two can't do the work that needs care and skill.
| A．not more | B．no more |
| C．not less | D．no less |
Word __________ quickly that the former Libyan leader Al-Gaddafi was killed in his hometown.
| A．got around | B．got down |
| C．got away | D．got through |
—We're organizing a party next Saturday, and I'd like you to come.
— __________! I have another one that day. Thank you just the same.
| A．Good luck | B．What a pity |
| C．Never do it again | D．Well done |
—What do you think makes him so sad?
— __________ the exam.
| A．He failed | B．He failing |
| C．His failing | D．To have failed |