Without proper lessons, you could ___ a lot of bad habits when playing the piano.
| A．keep up | B．pick up | C．draw up | D．catch up |
It was __________________ back home from work.
| A．not until midnight did he go | B．until midnight that he didn’t go |
| C．not until midnight that he went | D．until midnight when he didn’t go |
There is no reason why you shouldn’t tell the headmaster _________ that you are resigning because he has arranged your post.
| A．in effect | B．in fact | C．in advance | D．in support |
It was with great joy the couple found their missing son after 18 years.
| A．when | B．that | C．what | D．which |
What ______ the doctors most was that they could not find the cause of the disease.
| A．astonished | B．puzzled | C．surprised | D．amused |
_____ their hats into the air, the fans of the winning team let out loud shouts of victory.
| A． To throw | B．Thrown | C．Throwing | D．Being thrown |