So hard did he work that he __________made himself ill for a whole week. 

The charity sale our school organizes every year has taught us much that we would never have _____ learned in class.

 The new manager is intelligent and hard-working, and___________, he is very charming.

27．My uncle’s house in the downtown area is much smaller than ours , but it is twice _______ expensive . 

These　good　sare＿＿for　export，though　a　few　of　them　may　be　sold　on　the　home　market．