-How do you usually go to work, Miss Green?
--I usually go to work ___ foot, but sometimes __ my bike.
| A．on, by | B．on, on | C．by, on | D．by, by |
---Millie，is there anything else you want to know about Huaguo Mountain?
---Yes，I am still wondering __________ .
| A．how can I get there |
| B．what should we do to make it more beautiful |
| C．how many monkeys are there in the mountain |
| D．if the tickets for students are less expensive |
— I know smoking is bad for my health， ____ I just can’t give it up.
— It is easier said than done.
| A．for | B．or | C．but | D．so |
I won’t leave the classroom until my homework ______.
| A．finishes | B．is finished |
| C．will finish | D．are finished |
--- Lucy often helps her classmates with their study.
--- _______ a good girl she is!
| A．What | B．How | C．What a | D．How a |
We may meet all kinds of difficulties in the future， but we should be confident enough to any challenge.
| A．put on | B．get on | C．take on | D．try on |