— What did Tina say just now?
— She asked ____ this summer holiday.
| A．whether could you teach her dance |
| B．that whether you could teach her dance |
| C．if could you teach her dance |
| D．if you could teach her dance |
I regret ___ harder in the past two years.
| A．not having studied | B．having studied | C．having not studied | D．not being studied |
Had your father seen the doctor earlier, he ___.
| A．would have died | B．would not have died | C．would not die | D．has not died |
Tom’s uncle must be an engineer, ___?
| A．mustn’t he | B．can’t he | C．isn’t he | D．needn’t he |
He ___ on the grass, looking at the clouds in the sky.
| A．is laying | B．is lying | C．has laid | D．has lied |
His mother ___ a lot of silkworms last summer.
| A．rose | B．fed | C．raised | D．grew |