Only after the woman had her own child ________ how difficult it was to be a mother.
| A．she realized | B．had she realized | C．she had realized | D．did she realize |
This company was the first _____ portable radios as well as cassette tape recorders in the world．
| A．producing | B．to produce | C．having produced | D．produced |
When a friend gave Tom a ticket he ________ to the game．
| A．couldn’t help but go | B．couldn’t help but going |
| C．can’t help but to go | D．can’t help but going |
---How did you find your trip to America, John?
---_________．
| A．I went there by plane | B．Tom showed me around |
| C．Well, it depends | D．Oh, wonderful, indeed |
The little kitty saw itself _____ in the water and felt puzzled．
| A．reflected | B．reflecting | C．reflect | D．reflects |
The person sitting opposite _____ Mr．Smith is our new manager．
| A．to | B．/ | C．with | D．of |