All the students who would like to visit the Province Museum, ______ down names here.
A. writing B. to write C. write D. wrote
It is ______ to have achieved so much in such a short time.
A. something B. anything C. nothing D. everything
In fact, the renovation is just one move in a huge project to improve Chinese teachers’ housing ______ in recent years.
A. situations B. equipment C. circumstances D. conditions
A curve is a line ______ no part is straight and which has no angle.
A. that B. whose C. in which D. of which
Research shows that humans ______ from selfish to unselfish behavior when they are watched.
A. tell B. switch C. range D. distinguish
______ 6 world powers have accepted ______ Iranian offer for talks on its disputed nuclear program.
A. The; a B. 不填; an C. The; an D. 不填; a
