During the last three decades, the number of people participating in physical fitness programs ___ sharply.
| A．was increasing | B．has increased |
| C．had increased | D．will be increasing |
With some books badly needed _____, she hurried to the bookstore.
| A．buying | B．bought |
| C．to buy | D．buy |
I was blessed with a happy childhood, _____ that most people would want to have.
| A．which | B．it | C．one | D．that |
To improve the quality of our products, we asked for suggestions _____ had used the products.
| A．who | B．whoever |
| C．whichever | D．which |
, I can’t express myself in words.
| A．So long as I am fond of her |
| B．Unless I am fond of her |
| C．Much as I am fond of her |
| D．As I am fond of her very much |
When asked to explain ____ made her remain so young , she began to tell us her secret.
| A．what it was that | B．that what was it |
| C．it was what that | D．what was it that |