22．Collecting stamps as a hobby___________ increasingly popular during the past fifty years.
| A．becomes | B．became | C．has become | D．had become |
warm at night, I would fill the woodstove, then set my alarm clock for midnight so I could
refill it.
| A． | Staying | B． | Stayed | C． | To stay | D． | Stay |
Every daya proverb aloud several times until you have it memorized.
| A． | read | B． | reading | C． | to read | D． | reads |
You cannot accept an opinion ________ to you unless it is based on facts.
| A．offering | B．to offer | C．having offered | D．offered |
Do not let any failures discourage you, for you can never tell ________ close you may be to victory.
| A．how | B．that | C．which | D．where |
— Have you heard about the recent election?
— Sure, it ________ the only thing on the news for the last three days.
| A．would be | B．is | C．has been | D．will be |