______ he met with the difficulty did he realize the importance of our help.
| A．Even after | B．Never until | C．Only before | D．Ever though |
She was good at physics _________she found it boring.
| A．despite | B．in spite of |
| C．in spite the fact that | D．despite the fact that |
The experiment show that proper amount of exercise, if ________ regularly, can improve our health.
| A．carry out | B．carried out | C．to carry out | D．being carried out |
Listen! Do you hear someone _________ for help?
| A．call | B．calling | C．to call | D．called |
His first book ________ next month is based on a true story.
| A．published | B．to publish | C．to be published | D．being published |
I’m not going to ________ their smoking any longer.
| A．catch up with | B．put up with |
| C．end up with | D．keep up with |