44.The price of beer _______ from 50 cents to $4 per liter during the summer season.
A) altered B) ranged C) separated D) differed
45.His remarks left me _______ about his real purpose.
A) wondered B) wonder C) to wonder D) wondering
46.I have heard both teachers and students _______ well of him.
A) to speak B) spoken C) to have spoken D) speak
47.Our son doesn’t know what to _______ at the university; he can’t make up his mind about his future.
A) take in B) take up C) take over D) take after
48.The house was very quiet, _______ as it was on the side of a mountain.
A) isolated B) isolating C) being isolated D) having been isolated
49.Although they plant trees in this area every year, the tops of some hills are still _______.
A) blank B) hollow C) vacant D) bare
50.Being a pop star can be quite a hard life, with a lot of travelling _______heavy schedules.
A) with regard to B) as to C) in relation to D) owint to
51.Tony is very disappointed _______ the results of the exam.
A) with B) for C) toward D) on
52.William Penn, the founder of Pennsylvania, _______ defended the right of every citizen to freedom of choice in religion.
A) peculiarly B) indifferently C) vigorously D) inevitably
53.I hope all the precautions against air pollution, _______ suggested by the local government, will be seriously considered here.
A) while B) since C) after D) as
