[ Present Simple and Present Continuous Tense ]
Steve is in his bedroom. He …… the floor.
A. is vacuuming
B. is vacuming
C. are vacuuming
D. vacuumming

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Grammar › ViewWhich of these sentences is written correctly?
A. The gardener, whose name is Wes, planted several types of flowers, because it will look beautiful.
B. The gardener whose name is Wes planted several types of flowers, because it will look beautiful.
C. The gardener, whose name is Wes, planted several types of flowers because it will look beautiful.
Grammar › View
By 2020 I think we will ____________ a settlement on Mars
A. Built
B. Have built
C. Have been building
D. Be built