单项选择题

The speaker was ______ delivered her presentation this morning, but she could not make it to the venue on time.

A．had
B．having
C．to have
D．having been
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单项选择题
All the baggage loaded on the airport carts ______ to Mr. Swali and his family.
A．belong
B．belongs
C．belonging
D．belongings
单项选择题
The management team will ______ the new employee review system over the next month.
A．accompany
B．. implement
C．base
D．instruct
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