—The problem is very difficult. I'm afraid you can't work it out now.
— I fail this time, I will try it again.
| A．Even if | B．Since | C．As if | D．Though |
---- Do you _________ he is an excellent student?
----Of course, he is. What’s more, he has a gift _____ music.
| A．admit; for | B．admit; over | C．permit; for | D．allow; on |
How long can you ________ your breath underwater?
| A．hold | B．take | C．keep | D．save |
We’re so much looking forward ____________ you again.
| A．to see | B．to seeing | C．at seeing | D．for seeing |
I _________ him for his success in business.
| A．enjoy | B．treat | C．believe | D．admire |
If they do not give us a treat, we can play a trick ________ them.
| A．at | B．on | C．for | D．to |