.
I like getting up very early in summer. The morning air is so good ___ .
| A．to be breathed | B．to breathe | C．breathing | D．being breathed |
It was _____ it raised so many difficult questions _____ the book took a long time to come out.
| A．that; that | B．since; which | C．because; that | D．because; which |
It is sometimes of great _____ to explain to the patient what is happening.
| A．technique | B．signal | C．importance | D．freedom |
The failure of his plan made him _____ that he had made a great mistake in working out the plan.
| A．be aware | B．aware of | C．aware | D．be aware of |
—I’d like to book a single room in your hotel.
—OK. They’re US$100 each, but a room with a sea view will cost _____ $10.
| A．the other | B．another | C．other | D．others |
—What should I wear for the party, darling?
—_______．We're already late!
| A．Come on! | B．Cheer up! |
| C．It's a long story． | D．Don't mention it |