PART TWO LANGUAGE KNOWLEDGE
SECTION A
Directions:Beneath each of the following sentences there are four choices marked with A, B, C and D. Choose the one that best completes the sentence.
21. Your work is well done; there is some room for improvement in it, ______.
A. as B. although C. but D. though
22. How long do you suppose it is ____ he arrived there?
A. when B. before C. after D. since
23. Sleeping in bed, I could hear the rain _____ against the window.
A. hitting B. striking C. beating D. dropping