Do you know how much time and effort they devoted________ such a complicated project?
| A．to complete | B．completed | C．completing | D．to completing |
Is this the watch you wish _____?
| A．to have repaired | B．to repair it |
| C．to have it repaired | D．will be repaired |
_____, he suddenly found the shop he was looking for.
| A．When he turns round | B．To turn the left |
| C．Turned backward | D．Turning to the left |
I found John _____ the desk, _____ his homework carefully.
| A．seated at; to do | B．sitting at; doing |
| C．sat at; does | D．taking his seat at; to do |
We must set about _____ our lesson for the mid-term examination.
| A．reviewing | B．reviewed | C．to review | D．to reviewing |
I can't understand _____ at that poor child.
| A．you to laugh | B．you laughing | C．you laugh | D．why laugh |