— Would you like to sing some songs with us?
— _________ I have to cook.
| A．Of course. | B．I’d love to. |
| C．I’m sorry I can’t. | D．It’s fun. |
China supplies more than 90 percent of the world’s rare earth metals, but its reserves only ________ about one-third of the world’s total.
| A．take up | B．make up |
| C．build up | D．set up |
--- It is selfless _____ the doctor to devote all the time he had for the patients.
--- I think so, they are so great.
| A．for; to care | B．of; to care |
| C．for; to caring | D．of; to caring |
_____not only Jim but also his parents _____ a few places of interest since they came to China?
| A．Has; visited | B．Will; visit |
| C．Have; visited | D．Did; visit |
---It’s 12 April today. Have they found any useful information about the plane's black box?
---Flight MH370? Yes, but it’s difficult to decide where the black box really is.
| A．still | B．ever |
| C．yet | D．never |
______ I have a quick word with you? Something important has happened.
| A．Must | B．Could | C．Would | D．Should |