Alice was_________the letter from Tom, but it didn't reach her for some reason.
It took me quite a while to ______ how to solve this problem.
The Smiths consider ______ a computer, which is commonly considered ______ a great help in our work and study.
He is not a hard-working boy. But ______ intelligence, he is much better than anyone else in the whole class.
---Sam likes French but he is not good at it. ---______ Susan.
The new lab being built will be ______ the present one. A. as three times big as C. three times as big as C. as big as three times D. as big three times as