He sat there silent for some time, ______ thought.
A) having lost in
B) be lost in
C) losing in
D) lost in

单项选择题It is not enough only to __________ the rules of grammarif you want to learn English well.A) have in mindB) keep in mindC) make up your mindD)keep your head

单项选择题The party are _______ to the idea of helping those who are not ableto help themselves.A) adaptedB) committedC) compelledD) inspired

单项选择题The main task of the new government will be to _______the country towardsdemocracy.A) programB) steerC) countD) perceive

单项选择题If he _____giving up smoking, he can make it.A) sets the mind onB) sets his mind onC) has a mindD) gives his mind to

单项选择题The two cars were broken into pieces in the _____.A. collideB. conflictC. clashD.collision

单项选择题Please accept my ________ apologies for not having informed you of the changesof textbooks in advance.A) obsessiveB) specializedC) lifetimeD) heartfelt

单项选择题They include the floor exercises as a regular part oftheir fitness _____.A) orderB) habitC) routineD) arrangement

单项选择题_____, I shall return in a day or two.A. in caseB. in some casesC. in the caseD. in anycase

单项选择题The skaters moved over the ice with a smooth, effortless _______.A. graceB. gloryC. globeD. groan

单项选择题If there is any way we can be of assistance, please do not hesitateto _____us.A. contactB. contact toC. touchD. touch to