Evdence has been found through years of study______children’s early sleeping problem likely to continue when they grow up.
| A．why | B．how | C．whether | D．that |
_____ scores of times , but he still couldn’t understand it ．
| A．Having explained | B．Having been explained |
| C．Though it was explained | D．It was explained |
We waited and waited．_________ we had been looking forward to ．
| A．Then came the hour | B．Then did the hour come |
| C．Then the hour came | D．The hour then came |
________ their son away to college, the old couple got more room in the house．
| A．As | B．For | C．Through | D．With |
Fish have eyes and ________appears to be a nose, and they can hear, too．
| A．that | B．which | C．it | D．what |
—Why are you looking pleased ?
—Oh, I’ve just had a job _________．
| A．to offer | B．offering | C．offered | D．to be offered |