12.He is always ________and never feels tired.
| A．energetic | B．lovely | C．friendly | D．independent |
It’s hard to imagine_____it would be like living on Mars.
| A．that | B．how | C．where | D．what |
I don’t know_____the future holds in store for me，but I’ll face the storms of life bravely.
| A．how | B．where | C．that | D．what |
Stage fright is a common example of___educators call a“lack of confidence”among students.
| A．that | B．what | C．which | D．whose |
—Have you finished the book?
—No，I’ve read up to____ the children discover the secret cave.
| A．which | B．what | C．that | D．where |
I really don’t know______Tom lost his wallet.
A.when was it that B that it was when
C. where it was that D. it was where that