Not until I came home last nightto bed.
| A． | Mum did go | B． | did Mum go | C． | went Mum | D． | Mum went |
Concept cars are a way for designers to________ their ideas on the public with complete freedom.
| A．try on | B．try for | C．try over | D．try out |
Her eyes __________ on her plate and in a short time, she was busy ________.
| A．were fixed, eating | B．fixed, to eat |
| C．were fixed, to eat | D．fixed, eating |
“I think the tie beautiful,” I said, “A man can never have ______ many ties.”
| A．so | B．too | C．enough | D．/ |
— Do you mind if I keep pets in this building? — _______ .
| A．I'd rather you didn't, actually. |
| B．Of course not, it's not allowed here. |
| C．Never mind |
| D．No, you can't. |
Dr Yuan Longping grows ________ is called super hybrid rice, _________ has a high output.
| A．what; which | B．that; what | C．that; which | D．what; what |