45. The Ministry of Defense has faced numerous difficulties getting volunteers _____ in the military.
(A) be enlisting (B) who enlist (C) that enlist (D) to enlist
48 ._____the family income, the Chang’s could afford to buy a new car.
(A) Besides augments (B) Having augmented (C) Since augmenting (D) Going to augment
49. Just look at how much we _____ when we worked together last week.
(A) accomplished (B) can accomplish
(C) have accomplished (D) have been accomplishing