_______ to the discovery of radium, Madame Curie plays an important role in modern
science.
| A．Devoting | B．Devoted |
| C．Being devoted | D．Having devoted |
Please do me a favor — ______ my friend Mr. Smith to Youth Theater at 7:30 tonight.
| A．to invite | B．inviting | C．invite | D．invited |
You and I could hardly work together,?
| A． | could you | B． | couldn't I | C． | couldn't we | D． | could we |
— It’s the office! So you ______ know eating is not allowed here.
— Oh, sorry.
| A．must | B．will | C．may | D．need |
Nowadays people sometimes separate their waste to make it easier for it ______. .
| A．reusing | B．reused | C．reuses | D．to be reused |
She is very dear to us. We have been prepared to doit takes to save her life.
| A． | whichever | B． | however | C． | whatever | D． | whoever |