The city is a greener city now because many trees____every year.( )
were planted
are planted
will be planted
was planted
What _____ it is to go horse riding __________ weather!
________ great scientist Qian Xuesen is!
()I think _______ necessary for you _______ breakfast.
The workers were made _____ the whole day.
He often plans_________ a very relaxing vacation. A. having B. have C. to have