The man you referred to _____ just now.
| A．comes | B．come |
| C．coming | D．came |
Grandma does all her own shopping and cooking—I have never seen ____aged person.
| A．an independent | B．a more independent |
| C．the most independent | D．the more independent |
Our English teacher told us to find out ____the differences between American English and British English lie.
| A．where | B．how | C．what | D．which |
—Lisa, what do you think of the job of being a nurse?
—In my opinion, it ____ be difficult sometimes though it seems easy.
| A．should | B．can | C．must | D．need |
Tom makes ____a rule to give a summary of the new important points after class.
| A．that | B．what | C．them | D．it |
Into the dark apartment ___ , who was quite surprised when everyone shouted “Happy birthday!”
| A．did David walk | B．David did walk |
| C．David walked | D．walked David |