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They are ______ in the river.

[    ]

  A. swimming   B. swiming   C. swim   D. swaming

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They are having ________ (上一节游泳课).

[  ]

A.a swim lesson

B.a swimming lesson

C.a swiming lesson

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They are having ________ (上一节游泳课).

[  ]

A.a swim lesson

B.a swimming lesson

C.a swiming lesson

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—What are the boys doing in the river?—

They ________.

A.are swiming                  B.are swimming

C.swimming                   D.are swim

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--What are the boys doing in the river?  

-- They ______.  

A. are swiming  B. are swimming  C. swimming  D. are swim

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