——Mum, I can’t help _____ some housework tonight. There’ll be a football match.—— All right.A doing B done C do D did
She is the only one of the persons ________ from the mistakes.
About _______ gene-targeting drugs are already in testing pipeline. It won’t be long ______ they are put into effect.
---_________________ ---Thank you. I certainly will.
When you go by train, please see to it_______ you take an express, _______ that stops only at big stations.
She had to lie to the company and ______ a man in order to get a job, ______ rather strange.