A warm thought suddenly came to me _______ I might substitute the hero to buy some flowers for his mother’s 60th birthday. 
| A．if | B．when | C．that | D．which |
What she spends a month at university___________ no more than 500 yuan.
| A．adds up | B．adds up to | C．adds to | D．adds that |
He asked me how much ________ on the mountain bike.
| A．did I pay | B．I had spent | C．did I spend | D．I had cost |
He was lucky in the accident, but his car was completely _________.
| A．ruin | B．hurt | C．damaged | D．destroyed |
Without enough food, many birds didn’t _______ the cold weather.
| A．live | B．continue | C．last | D．survive |
—Have you finished your experiment report, Jane?
—Oh, my God. I’ve _____ forgotten all about that.
| A．strongly | B．extremely | C．entirely | D．freely |