The engineers are so busy that they have zero time for outdoor sports activities,___they have the interest
| A．wherever |
| B．whenever |
| C．even if |
| D．as if |
.
The man to whom we handed the forms pointed out that they had not been ________ filled in.
| A．slightly | B．properly | C．regularly | D．eventually |
.
Playing with a cell phone, he suddenly ________ the teacher staring at him.
| A．knew of | B．became aware of |
| C．reflected | D．aware for |
.
She seemed ________ the book before, but she said she had never.
| A．to read | B．to have read | C．to be reading | D．reading |
.
________ on the subject for half an hour, Liu Ying suddenly stopped.
| A．To be worked | B．To work |
| C．Having worked | D．Having been worked |
.
She offered me practical ________ with my research, for which I would appreciate for my whole life.
| A．conduct | B．certificate | C．admiration | D．assistance |