When I came in, the children pretended _
问题:
When I came in, the children pretended ______ and no one even raised their eyes. |
A. to study B. have studied C. to be studying D. to have been studied |
When I came in, the children pretended ______ and no one even raised their eyes. |
A. to study B. have studied C. to be studying D. to have been studied |