She has a gift for creating an atmosphere for her students _______allows them to communicate freely with each other.
| A．which | B．where | C．what | D．who |
I have ever found such a case________the son refused to support his mother when she became too old to feed herself.
| A．that | B．where | C．when | D．which |
We didn’t feel surprised when we found he fixed his eyes on the food with a(n)________expression on his face，for we knew that he hadn’t eaten anything for 3 days.
| A．anxious | B．worried | C．eager | D．curious |
With his attention________on the shops along the roadside，he knocked an old man down while riding to school.
A concentratingB．concentrated C．to concentrate D．concentrates
答案 B
解析 考查词组，故选B项。
It was raining heavily.Little Mary felt cold，so she stood________to her mother.
| A． close | B．closely | C． closed | D．closing |
Last night I watched Milan A．C.________football on TV.
A．were playing B．to play C．playedD．play