Mary didn’t understand made her deskmate so upset all the morning.
| A．it was that | B．why it was that |
| C．how that was | D．what it was that |
Spending so much time playing computer games is holding him ________at school.
| A．on |
| B．off |
| C．back |
| D．over |
We thought of selling this old furniture，but we've decided to ________it. It might be valuable.
| A．hold on to |
| B．keep up with |
| C．turn to |
| D．look after |
________a moment and I will go to your rescue.
| A．Go on |
| B．Hold on |
| C．Move on |
| D．Carry on |
He's so determined that no one can ________from making an attempt.
| A．hold back him |
| B．hold him back |
| C．hold him up |
| D．hold to him |
The little boy showed great interest ________chemistry when he was doing it________
the first time.
| A．in；for |
| B．on；for |
| C．in；on |
| D．for；at |