How did it ______ that the young guy fell off the bridge into the river?
| A．come out | B．come about | C．come across | D．come up |
--- How do you find _________ birthday party of the Blairs?
--- I should say it was __________ complete failure．
| A．a; a | B．the; a | C．a; / | D．the; / |
---Cheer up! Have another go, OK?
--- _____________．
| A．With pleasure | B．Fine, thank you | C．Good idea | D．Never mind |
Not until he met with the difficulty _______ the importance of group work.
| A．he realized | B．did he realize | C．realized he | D．he didn’t realize |
Mary got the first prize in the National Math Competition, ________, for sure, delighted everyone.
| A．who | B．that | C．this | D．which |
______ he had broken the record, he would be a world-famous runner now.
| A．When | B．Because | C．If | D．Though |