When the cooking class changed to Thursday, I had to so that I could pick up my son from his piano lesson.
| A．drop in |
| B．drop off |
| C．drop out |
| D．drop by |
My sister______ the League last month and she has decided to ______ the activity to help the aged next week.
| A．joined; join in | B．took part in; join | C．joined; attend | D．joined in; join in |
Eric received training in computer for one year, _______ he found a job in a big company.
| A．after that | B．after it | C．after which | D．after this |
______ is know to us all, good friends ______ happiness and value to our life.
| A．It; add | B．As; add up | C．It; add up | D．As; add |
Letterboxes are mu
ch more _______ in the UK than in the US, where most people have a mailbox instead.
| A．common | B．ordinary | C．normal | D．usual |
I’m certain David’s told you his business trouble. ________, it’s no secret that he owes a lot of money to the bank..
| A．However | B．Anyway | C．Therefore | D．Though |