---Do you know how long ________? ----I’m sorry I don’t know.
| A．he has come here | B．has he been married |
| C．Tom has bought the car | D．his uncle has been abroad |
Your English book is on the floor．Please________．
| A．pick it up |
| B．look for it |
| C．pick up it |
| D．look it up |
Susan used to________to school，but she is used to________to school now．
| A．walk；take a bus |
| B．walk；riding a bike |
| C．walk；ride a bike |
| D．walked；took a bus |
I think every student should go to school________，but some of them are always late．
| A．by the time |
| B．on time |
| C．for a time |
| D．at times |
To keep safe，everyone________to wear a seat belt in the car．
| A．is supposed |
| B．supposes |
| C．supposed |
| D．will suppose |
The little boy can’t understand what you said．________，he is only two years old．
| A．After all |
| B．At all |
| C．In all |
| D．For all |