At one point I made up my mind to talk to Uncle Sam. Then I changed my mind, ____ that he could do nothing to help.
| A．to realize | B．realized |
| C．realizing | D．being realized |
I found the lecture hard to follow because itwhen I arrived.
| A． | started | B． | was starting |
| C． | would start | D． | had started |
--- What time is it?
--- I have no idea. But just a minute, I ______ it for you.
| A．check | B．checked |
| C．will check | D．would check |
The best moment for the football star was _______ he scored the winning goal.
| A．where | B．when |
| C．how | D．why |
the forest park is far away, a lot of tourists visit it every year.
| A． | As | B． | When |
| C． | Even though | D． | In case |
There are still many problemsbefore we are ready for a long stay on the Moon.
| A． | solving | B． | solved |
| C． | being solved | D． | to be solved |