第二部分英语知识运用（共两节，满分45分）
单项填空（共15小题；每小题1分，满分15分）
21. Everybody showed great respect to the old doctor, who devoted everything he had to _____ the poor conditions of the local hospital.
A. improving B. improve C. improved D. being improved
A. that did I begin B. had I begun
C. then I began D. that I began
23．Maybe all Americans realize that______ they expect to be next president will face lots of problems.
A．no matter who B．whoever
C．whomever D．no matter whom
24．There is no doubt，in my opinion， ________matters is not the speed，but the quality of the product.
A. that B. which C. what that D. that what
25. Ｉstill remember the day when I said goodbye to my family, ________on the plane and started my journey to London.
A. to step B. stepping C. stepped D. having stepped
26．As we have known from the map of the world, this is ________.
A. twice as large as that island B. twice as larger as that island
C. as twice large as that one D. twice as large island as that
27．—Mom，Dad is smoking again!
