第一节：单项填空（共15小题，每小题1分，满分15分）
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
21.It is said that we are living in __ Information Age, __ time of new discoveries and great changes.
A. the; a B. /; the C. /; a D. an; the
22. --- Did you remember to return Tom the book you borrowed the other day?
---Yes, I gave it to him ____________ I met him at the gate.
A. while B. the moment C. suddenly D. once
23.I would appreciate _________ if you give me a bit of good advice on how to solve the tricky problem .
A. you B. this C. that D. it
24. _________ from the heart attack for years, Professor Wang has to take some medicine with him wherever he goes.
A. Suffered B. Suffering C. Having suffered D. Being suffered
25. You'd better ___________ some money for your child’s schooling.
A．set aside B．pick up C．put off D．give away
26. Mary wants to have a study of her own , ________ she can study without being troubled.
A. where B. during which C. when D. on which
