Though _______ money, his parents managed to send him to university.
| A．lack of | B．lacking of | C．lacking | D．lacked in |
The government doesn’t know how to deal with the dangerous situation________all the public are aware of at present.
| A．where | B．which | C．when | D．who |
Don't bother Tom, he is________with the experiment on water molecules in the lab.
| A．focused | B．fixed | C．occupied | D．concentrated |
It’s_________ comfort to know that so many people are donating money and food to the people in________need.
| A．/, the | B．a, the | C．a, / | D．/, a |
．After his journey from abroad, Richard Johns returned home, __________.
| A．exhausting | B．exhausted | C．being exhausted | D．having exhausted |
I’m surprised to see you smoking. You ________, I remember.
| A．are not used to | B．were not used to | C．didn’t use to | D．used not |