It’s really difficult to ______ what he is trying to express.
| A．leave out | B．break out | C．put out | D．make out |
---May I try on this green skirt?
---______, but I’m afraid the color is not quite suitable for you.
| A．By all means | B．Never mind | C．My pleasure | D．Forget it |
When first ______ to the market, these new products in their company enjoyed a great success.
| A．Introducing | B．introduced | C．to introduce | D．being introduced |
--- Do we have to hand in our research reports this afternoon, Professor Smith?
--- Yes, you _______ . I will be waiting to check them all the afternoon.
| A．should | B．may | C．can | D．must |
The young couple had a quarrel last night and neither of them would give in to ______.
| A．the other | B．another | C．one | D．either |
In the rice-growing world, ______ Chinese scientist, Yuan Longping, is ______ leading figure.
| A．a; the | B．the; a | C．a; a | D．the; the |