Charles Babbage is generally considered ______ the first computer.
A．to invent B．inventing C．to have invented D．having invented
I can’t have you _____ to your mother like this!
A．talk B．talked C．talking D．to talk
How do you guess ________?
A．did they finish the work within so short a time
B．they finished the work within so short a time
C．had they finished the work within so short a time
D．will they finish the work within so short a time
With his horse ____to the tree, the man had a rest in the shade.
A．tying B．tie C．being tied D．tied
The boy broke the rule ______ he got punished.
A．so that B．in order that C．so as to D．in order to
The meetings are very short, so there is little _____ to have a real discussion.
A．challenge B．change C．chance D．chapter
