___ himself in carrying out an experiment, he can’t spare time to look after his children.
A. Occupied B. Having occupied C. Occupying D. Having been occupied
This argument sounds reasonable, but ___________ it’s incorrect.
A. fortunately B. actually C. naturally D. obviously
This dictionary, which I bought yesterday, has been highly _______ by my professor.
A. acknowledged B. appealed C. recommended D. commanded
It is thought that Henan Shuanghui Industry Group Co., Ltd. ____take responsibility for its consumers.
A. can B. may C. must D. need
As a student of Senior Three, he has very little free time __ he can spend developing his own interest.
A. when B. in which C. at which D. that
Mary is always ready to do some __ work at the local geracomium（敬老院）in her spare time.
A. responsible B. exhausting C. voluntary D. professional
