When I try to understand ______ that prevents so many Americans from being happy as one might expect, it seemed to me that there are two causes.
| A．why it does | B．what it does | C．what it is | D．why it is |
It was _____ he came back from Africa that year _________ he met the girl he would like to marry.
| A．when; then | B．not; until | C．not until; that | D．only; when |
He determined to teach in a western province, though he _______in the city for a better life.
| A．could stay | B．would stay | C．could have stayed | D．had stayed |
—Do you think it wise for Chinese parents to try to do everything for their children?
—No, that’s they are mistaken.
| A．where | B．when | C．what | D．how |
The role change from husband to father, although difficult, doesn’t seem so great as from wife to mother.
| A．one | B．that | C．this | D．those |
. reasonable, the idea he to create a friendly environment attracted much public attention.
| A．Sounded; came about | B．Sounded; came across |
| C．Sounding; came up with | D．Sounding; came along |