We all feel it is Jack as well as his wife that ________ for their son's bad performance at school.
| A．are to blame | B．is to be blamed |
| C．are to be blamed | D．is to blame |
_____ back problems， always bend your knees when you lift heavy objects.
| A．Avoiding | B．To avoid |
| C．Having avoided | D．To be avoiding |
A man rushed past and jogged her elbow，_____ the bag.
| A．making her drop | B．to make her dropped |
| C．making her dropping | D．to make her dropping |
There were lots of people _____， and not one of them offered to help.
| A．standing watching | B．standing to watch |
| C．stood watching | D．stood to watch |
After driving all night we got to Amy’s place，_____ that she was away.
| A．only to discover |
| B．only discovering |
| C．only discovered |
| D．only having discovered |
_____ out more about our products， fill in the form and send it to us at the address _____ below.
| A．Finding， giving | B．To find， given |
| C．Finding， given | D．To find， giving |