. The doorway is low, so ____ your head when you go in.
| A．mind | B．care | C．expect | D．Attend |
The book written by Gorky is worth __.
| A．read | B．reading | C．being read | D．to read |
The letter is still in my pocket. I forgot __ it.
| A．post | B．posting | C．to post | D．being posted |
Don’t believe him. He is __ again.
| A．lying | B．laying | C．lied | D．laid |
The room I __ is that big one.
| A．am referring | B．referred | C．have referred | D．referred to |
Hearing the news, Ruth could not help ___.
| A．laugh | B．laughing | C．to laugh | D．laughed |