Nobody knows __________next.
| A．what to do | B．to do what | C．which to do | D．how to do |
---Hi Mary, haven’t seen you for a long time. __________
--- Fine. What about you?
| A．How are you doing? | B．What are you doing? |
| C．How do you do. | D．What do you do? |
After completing and signing it, please return the form to us in the envelope ________.
| A．providing | B．provided | C．having provided | D．provide |
_______the Teachers’ Day ,the students are cleaning the classroom.
| A．In spite of | B．In celebration of | C．In search of | D．In place of |
I need to get another dictionary, because cover is dirty and page is missing.
| A．a; a | B．a; the | C．the; a | D．the; the |
My book, The House of Hales, is missing. Who ________ have taken it?
| A．need | B．must | C．should | D．could |