The manager waited patiently ________ the customer signed the paper.

A.until B.after C.before D.unless

After ________ some complaints about the food, the manager decided to change the cooks.

A.receive B.receiving C.received D.to receive

Don't worry. The meeting room ________ with everything necessary for the ceremony.

A.is decorated B.decorated C.has been decorated D.had been decorated

Most people enjoy ________ their holidays in Thailand for its natural beauty and wild animals.

A.spend B.spending C.spent D.to spend

Planning a trip is easy, ________ packing luggage can be a little bit difficult.

A.but B.or C.so D.for

The opening ceremony of the event ________ in Rome on Jan. 21, 2020.

A.is held B.was held C.will be held D.has been held

Many sea animals are in danger and ________ disappear from the Earth someday.

A.must B.should C.need D.may

The disease will be defeated as long as we ________ calm and stay strong.

A.keep B.kept C.are keeping D.had kept

Since last year east African countries ________ heavy rains and widespread floods.

A.experienced B.have experienced C.were experiencing D.had experienced

________ exciting form of dance Tap dancing is!

A.What B.What a C.What an D.How