While he was investigating ways to improve the telescope, Newton made ________ discovery which completely changed ________ man’s understanding of color.
| A．a; 不填 | B．a; the | C．不填; the | D．the; a |
Though ________ money, his parents managed to send him to university.
| A．lacked | B．lacking of |
| C．lacking | D．lacked in |
They stayed up until midnight _____ the old year out and the new year in.
| A．and saw | B．to see |
| C．seeing | D．for seeing |
.If the car won’t start, _____ it.
| A．try push | B．try pushing |
| C．to try pushing | D．to try to push |
“Which sweater is yours?” “The one _______ No. 9.”
| A．that marked | B．was marked with |
| C．which marked | D．marked with |
What worried the child most was ______ to visit his mother in the hospital.
A. his not allowing B. his not being allowed
C his being not allowed D. having not being allowed