He has three brothers, ________ is a doctor．
| A．all of them | B．all of whom | C．none of whom | D．both of them |
. Today, housework has been made much easier by electrical _____.
| A．facilities | B．appliances | C．instruments | D．equipment |
He _____ his engagement just before the wedding.
| A．broke out | B．broke away from | C．broke off | D．broke up |
_____ the English examination I would have gone to the concert last Sunday.
| A．In spite of | B．But for | C．Because of | D．As for |
_____ it is a good thing I did not get the post I had applied for, though I must admit that I was disappointed at the time.
| A．By the way | B．In a way | C．In the way | D．In no way |
If the boy had _____ the dog alone it wouldn't have bitten him.
| A．set | B．left | C．had | D．put |