—Everyone has periods in their lives_________everything seems very hard.
| A．when | B．where | C．which | D．that |
186. I only _______ him from my wife, but I have never met him.
| A．know | B．know of | C．know to | D．know by |
185. Hello! I_______ you _______ in London. How long have you been here?
| A．don't know…were | B．hadn't known…are |
| C．haven't known …are | D．didn't know … were |
184. There's no wind now. We can't _______ kites on the playground.
| A．make | B．float | C．fly | D．Drive |
183. This plan will help to _______ two birds with one stone.
| A．kill | B．murder | C．slaughter | D．Butcher |
182. In the time of great trouble, the soldiers _______ their spirits by singing.
| A．kept up | B．kept on | C．kept to | D．kept from |