It said the country's confirmed H7N9 cases were isolated and there has been no______ of human-to-human transmission.
| A．mark | B．symbol | C．sign | D．signal |
.
The field research will take Joan and Paul about five months; it will be a long time _____ we meet them again.
| A．after | B．before | C．since | D．when |
.
--- Have your working conditions improved?
--- No, _____ than before, I’m afraid.
| A．no better | B．a little better | C．not worse | D．no worse |
.
The Professor in the end decided to give the prize to____he believed had a good sense of English.
| A．who | B．anyone | C．whoever | D．whomever |
.
The language used in advertisements differs from _____ used in ordinary readings.
| A．which | B．what | C．that | D．it |
.
It was a pity that the great writer died _____ his work unfinished.
| A．for | B．with | C．from | D．of |