— What has made him unhappy recently?
— __________ alone to do the house work．
| A．Left | B．Being left | C．Having left | D．To leave |
. ---Isn’t it time you __________down to _________ your own things?
---I’m sorry for the delay, Dad.
| A．get; pack | B．got; packing | C．got; pack | D．get; packing |
When it _______ high technology, he is completely at a loss.
| A．refers to | B．comes to | C．happens to | D．speaks to |
Though _______ money, his parents managed to send him to university.
| A．lack of | B．lacking of | C．lacking | D．lacked in |
. ---Learning a language isn’t easy. It takes time.
---I agree. ________. There is no short cut.
| A．All roads lead to Rome | B．Rome was not built in a day |
| C．Practice makes perfect | D．Slow but sure wins the race |
. _____ can be enjoyed until you have a deep understanding of the low-carbon lifestyle.
| A．Something | B．Nothing | C．Few | D．Much |