.
No matter how great the difficulty is, it can’t _____the experts from finishing the project on time.
| A．hold back | B．hold up | C．hold out | D．hold on |
I’m sure that your letter will get______ attention. They know you’re waiting for the reply. 
| A．continued | B．immediate | C．careful | D．general |
Progress______ so far very good and we are sure that the work will be finished on time.
| A．was | B．had been | C．has been | D．will be |
Charles was alone at home, with_______ looking after him.
| A．someone | B．anyone | C．not one | D．no one |
I’m turning the shop_____to my son when I retire.
| A．away | B．up | C．over | D．off |
-How long have you been in the room?
- Just a few minutes. My cousins ___home together with me.
| A．have walked | B．had walked | C．walked | D．have been walking |