They lost their way in the forest and _____ made matters worse was that night began to fall.
| A．that | B．this | C．what | D．which |
The retired man donated most of his savings to the school damaged by the earthquake in Yushu, _______ the students to return to their classrooms．
| A．enabling | B．having enabled |
| C．to enable | D．to have enabled |
He spent at least as much time reading as you online yesterday.
| A．had to chat | B．did chatting |
| C．do chatting | D．had chatted |
--- Why does the lake smell terrible?
---Because large quantities of water .
| A．have polluted | B．is being polluted |
| C．have been polluted | D．has been polluted |
The book didn’t children probably because the author employed too many scientific terms in it.
| A．appeal to | B．apply to | C．intend to | D．lead to |
Had she her promise, she would have made it to Yale University.
| A．lived up to | B．looked up to | C．kept up with | D．come up with |