____73-year-old woman, who died of respiratory failure on Dec. 6, was confirmed to have been carrying ____H10N8 virus.
| A．A, the | B．The, the | C．A, \ | D．The, a |
It is said that the engines of Flight MH370____while flying over the Indian Ocean,with all on board killed .
| A．broke out | B．ran out | C．gave out | D．wore out |
—People often don't appreciate what they have, do they?
—No, _____ they lose it.
| A．if | B．after | C．when | D．until |
—Did Ann fail in English?
—She ____. Don't you notice that she looks depressed?
| A．might | B．must | C．may have | D．could have |
People believe that the China Dream is not very difficult ____ so long as the whole nation works hard for it.
| A．realizing | B．to be realized | C．realized | D．to realize |
Try not to cough more than you can_____since it may cause problems to your lungs.
| A．help | B．allow | C．stop | D．check |