When I came in, I saw Dr. Li ______ a patient.
| A．examine | B．examined | C．to examine | D．examining |
With international ______ and education exchanges increasing every year, the number of Chinese students studying abroad has increased rapidly.
| A．cooperation | B．competition | C．construction | D．conflict |
ItisthefirsttimethatI_______thiskindofmooncake.
| A．enjoyed | B．haveenjoyed | C．enjoy | D．had enjoyed |
Herealizedshewascrying________whathehadsaid.
| A．because | B．becauseof | C．as | D．since |
－HeaskedTom,“Haveyoufinishedyourhomework？”
－HeaskedTom______.
| A．ifhadhefinishedhishomework. |
| B．whetherhehadfinishedhishomework. |
| C．ifhehadfinishedhomework |
| D．ifyouhadfinishedyourhomework. |
Thereason_____he waslateforthemeetingwas____hislittlesonfellillthis morning.
| A．for,that | B．why,that | C．for,because | D．why,because |