I feel a bit nervous since this is the first time that I _______ to give a lecture to so large an audience till now.
| A．am invited | B．have invited |
| C．have been invited | D．will be invited |
Some intelligent and successful people find _____ difficult to succeed in language learning.
| A．them | B．it | C．themselves | D．itself |
---Do you know when she _________?
---Sorry, I don’t. But I’ll let you know when she _________.
| A．comes, comes | B．comes, will come |
| C．will come, will come | D．will come, comes |
The buildings in this modern city are growing tall, some even reaching over 400 meters _______ height.
| A．at | B．for | C．in | D．on |
—Can you come to help us with our work by 5 o’clock?
—I don’t know if I can help；________.
| A．that’s a pity | B．it all depends |
| C．you are welcome | D．that’s a pleasure |
________ I really don’t art, I find his work impressive.
| A．As | B．Since | C．While | D．If |