It was not until 1920 regular radio broadcast began.
| A．while | B．which | C．that | D．since |
What worried the child most was ______ to visit his mother in the hospital.
A. his not allowing B. his not being allowed
C his being not allowed D. having not being allowed
What have we said _______ her so happy?
| A．makes | B．to make |
| C．made | D．has made |
“Good morning. Can I help you?” “I’d like to have this package _______.”
| A．be weighed | B．to be weighed |
| C．to weigh | D．weighed |
Tony was very unhappy for _______ to the party.
| A．having not been invited | B．not having invited |
| C．having not invited | D．not having been invited |
Having a trip abroad is certainly good for the old couple, but it remains _______ whether they will enjoy it.
| A．to see | B．to be seen |
| C．seeing | D．seen |