Good technique in medicine means less pain and fewer deaths; , it is our duty to master it.
| A．thus | B．therefore | C．otherwise | D．however |
I wonder why he hasn't __ any of my letters for such a long time.
| A．replied | B．replied to | C．answer for | D．asked |
--Look! John is ___. Let’s go and see if he needs any help.
A, out of the breath B. out of breath C. out of his breath D. out of breathes
It's dark, Mum ___ be waiting for my return.
| A．can | B．should | C．must | D．may |
___ the invitation of Mr. Black, she attended the tea-party.
| A．At | B．On | C．To | D．With |
---Is this ___ man that you are looking for? ---Yes, this is ___ the man.
| A．the very, just | B．the just, just | C．right the, very | D．very the, very |