Some experts say _______ birthrate of Chinese, after the one-child policy is relaxed, can see _______ modest increase in future.
| A．the; a | B．a; a | C．a; / | D．the; the |
Usually what weighs us down are not the burdens of life, but how we handle _______ .
| A．this | B．them | C．it | D．us |
It is acknowledged that _______ shortest distance between persons is _______ sincere smile.
| A．a; the | B．the; / | C．a; / | D．the; a |
Canada is a large country _____ many people from all over the world live.
| A．which | B．in which | C．that | D．in that |
I called the airline to ______ my flight reservation a week before I left for Canada.
| A．expand | B．book | C．confirm | D．strengthen |
It was for the first time that the two countries ______ an agreement.
| A．reached | B．have reached | C．had reached | D．will reach |