John received an invitation to dinner, and with his work _____, he gladly accepted it.
| A．finished | B．finishing | C．having finished | D．was finished |
In spite of his ________ to be a scholar in that field, he is not well equipped with that talent.
| A．potential | B．competence |
| C．ambition | D．character |
I’m afraid there might have been 1000 audience in the concert last night, _____?
| A．am not I | B．aren’t I |
| C．mightn’t there | D．weren’t there |
_________ in the adult ceremony, the senior students feel they are shouldering heavier responsibilities now.
| A．Swear | B．Sworn |
| C．Having sworn | D．To have sworn |
Tu Youyou won Nobel Prize in Medicine for her discoveries that helped doctors fight malaria and _______ caused by roundworm parasites.
| A．injections | B．infections |
| C．prescriptions | D．presentations |
In the face of various economic uncertainties at home and abroad, the government has carried out ________ reforms to boost the economy.
| A．bureaucratic | B．systematic | C．arbitrary | D．ambiguous |