30．Frank’s marriage to the billionaire’s daughter got him through his hardest time, ________ years later he wondered what he could have done differently 。
| A．therefore | B．and | C．however | D．but |
The how to book can be of help to wants to do the job.
| A．who | B．whomever | C．no matter who | D．whoever |
The fact has worried many scientists ______ the earth is becoming warmer and warmer these years.
| A．what | B．which | C．that | D．though |
She is very dear to us. We have been prepared to do it takes to save her life.
| A．whichever | B．however | C．whatever | D．whoever |
My new shirt doesn’t fit me well, so I’ll take it back to the store sold it.
| A．where | B．when | C．that | D．which |
Was it in the village_______we used to live in_______the accident happened?
| A．where; that | B．which; that |
| C．that; where | D．where; which |