I remembered the door before I left the office, but forgot to turn off the lights.
| A．locking | B．to lock | C．having locked | D．to have locked |
The reason being late for the meeting was his little son fell in this morning.
| A．for; that | B．why; that | C．for; because | D．why; because |
At the age of eight, he ___a group of child dancers.
| A．joined in | B．attended | C．took part in | D．joined |
_______ miss the train, he got up very early this morning.
| A．In order to not | B．So as to not | C．In order not to | D．So as not to |
Do you know the trouble I have _____ the work?
| A．to do | B．doing | C．do | D．done |
It was the third time that she ______ to this mountain village to see the children.
| A．had come | B．has come | C．came | D．would come |