It is reported that the scientists in our country are_______all possible way to control H7N9 flu.
| A．operating | B．solving | C．exploding | D．exploring |
---Which book could I take?
---Oh, you can take ____of them. I’ll keep none.
| A．all | B．both | C．neither | D．either |
Nobody believed a 92-year-old man could run a marathon_______he passed the finishing line. People of all ages can challenge themselves.
| A．if | B．since | C．until | D．unless |
---Can you tell me _______?
---With Lucy’s help.
| A．when you did it so well | B．when did you do it so well |
| C．how you did it so well | D．how did you do it so well |
--_______do you eat fast food?
--Twice a week.
| A．How long | B．How soon | C．How often | D．How far |
I didn’t hear you because I __________ the news on the radio.
| A．listen to | B． am listening to | C． listened to | D．was listening to |