We need to be______ the long-term effect of playing computer games too much on children.
A. concerned about B. amazed at
C. threatened by D. tired of
Having a trip abroad is certainly good for the old couple, but it remains______whether they will enjoy it.
A. to see B. to be seen
C. seeing D. seen
These plants are watered________.
A. each other day B. every other day
C. each of two days D. every of two days
_____ in her best skirt, the girl tried to make herself ____ at the party.
A. Dressed; noticed B. Dressing; noticing
C. Dressing; noticed D. Dressed; noticing
The boy has made rapid progress in English this term, _____ the teacher praised him yesterday.
A. of what B. for what
C. of which D. for which
After months of voyage, Columbus arrived in ________ later proved a new continent.
A. where B. what C. which D. that
