Many people think it’s very difficult to ______ a conversation with someone who only says “Yes” and “No”.
| A．break off | B．focus on | C．keep up | D．listen to |
---Do you know the famous scientist Yuan Longping?
---Of course. His name______whenever the matter of hybrid rice（杂交水稻）is discussed.
| A．comes out | B．comes up | C．comes in | D．comes on |
---Why are you so hot?
---I_______football with my classmates and how I want to have a drink!
| A．was playing | B．have been playing | C．have played | D．played |
I’m looking for a _______ tie to match my suit.
| A．mid-sized red silk | B．red mid-sized silk |
| C．red silk mid-sized | D．silk red mid-sized |
When the spaceship traveled above,________new-looking earth appeared before us, _______
earth that we had never seen before.
| A．a; the | B．the; an | C．/; the | D．a; an |
---I really don’t know how to thank you enough.
---___________ .
| A．No problem. | B．Think nothing of it. |
| C．With pleasure. | D．Glad to hear that. |