Before he went abroad，he spent as much time as he _____ English.
| A．could learning | B．learned | C．to learn | D．could learn |
It took him a long time to ______the skills he needed to become a professional artist.
| A．acquire | B．inquire | C．require | D．request |
I’m so glad you’ve come here to ______this matter in person.
| A．lead to | B．see to | C．turn to | D．refer to |
They’ve made full preparations, but it remains ______whether they will be able to do a good job in the experiment.
| A．to see | B．seen | C．being seen | D．to be seen |
The blue sky of the holiday brochure was such a ______this rainy March day.
| A．compare with | B．compare to | C．contrast to | D．contrast as |
Who will be in charge in ______ of our boss?
| A．absence | B．the absence | C．absences | D．an absence |