John is the tallest boy in the class, according to himself.
| A．five foot eight as tall as | B．as tall as five foot eight |
| C．as five foot eight tall as | D．as tall five foot eight as |
________which university to attend，the girl asked her teacher for advice.
| A．Not knowing | B．Knowing not |
| C．Not known | D．Known not |
________ it with me should be a good choice.Trust me!
| A．When left | B．Leave |
| C．If you leave | D．Leaving |
Please do me a favor—________ my friend Mr.Smith to Youth Theater at 7：30 tonight.
| A．to invite | B．inviting | C．invite | D．invited |
The traffic rule says young children under the age of four and________ less than 40 pounds must be in a child safety seat
| A．being weighed | B．weighs |
| C．weighed | D．weighing |
________ blood if you can and many lives will be saved.
| A．Giving | B．Give | C．Given | D．To give |