If you _____ it , I will lend the book to you.
| A．read | B．will read | C．have read | D．were reading |
Someone is at the door. ________ must be Mr Smith.
| A．He | B．It |
| C．This | D．That |
Mr Smith is at the door. _______ wants to see you.
| A．He | B．It |
| C．This | D．That |
I’ve no idea. I just pretended nobody was at home, so I didn’t ask who _______ was.
| A．he | B．that |
| C．she | D．it |
I dislike _______ when others laugh at me in publicorthink poorly of me behind.
| A．that | B．those |
| C．it | D．them |
Everyone knows that _______ is dangerous to play with fire, but _______ is difficult is to prevent children from playing with fire.
| A．it, it | B．what, what |
| C．it, what | D．what, it |