21．If you break the rule, you can't escape ________ sooner or later.
A．punished B．being punished C．to be punished D．punishing
22. The fireman told us the trouble they had _______ the fire _______.
A. got, controlled B. got, controlling C. getting, controlled D. getting, to control
23. A communicative satellite ______ as much as 3.5 tons was sent up into space last week.
A. weighing B. weighed C. to be weighed D. being weighed
