1.The board of the company has decided to ________ its operations to include all aspects of the clothing business.
A) multiply
B) lengthen
C) expand
D) stretch
2.His business was very successful, but it was at the ________ of his family life.
A) consumption
B) credit
C) exhaustion
D) expense
3.First published in 1927, the charts remain an ________ source for researchers.
A) identical
B) indispensable
C) intelligent
D) inevitable
4.Joe is not good at sports, but when it ________ mathematics, he is the best in the class.
A) comes to
B) comes up to
C) comes on to
D) comes around to
5.Doctors warned against chewing tobacco as a ________ for smoking.
A) relief
B) revival
C) substitute
D) succession
6.When carbon is added to iron in proper ________ the result is steel.
A) rates
B) thicknesses
C) proportions
D) densities
7.You should try to ________ your ambition and be more realistic.
A) reserve
B) restrain
C) retain
D) replace