Waves of red light are about twice as long as _______ of blue light.
| A．those | B．that | C．it | D．Ones |
How come you stepped into the lab with your shoes on? You’re ________to take them off before you enter it. I told you so.
| A．suggested | B．supposed | C．forbidden | D．permitted |
She got stuck in a traffic jam on the way, or shedinner with us now．
| A．would be having | B．was having |
| C．is having | D．will be having |
—Seered handbag on the table? Is that yours?
—No．Mine ispink one
| A．a; the | B．the; a | C．the；不填 | D．不填；a |
She gave me half, and _____the other half for her husband
| A．kept | B．had kept | C．keeps | D．will keep |
Feathers are very light,we say "as light as a feather".
| A．in case | B．unless | C．if | D．so that |