Choose the underline part that need correcting in each sentence below

• Choose the underline part that need correcting in each sentence below:

31. At the moment Mr.Ha is knowing the use of present simple tense very well.
    A.At the moment         B.is knowing                     C.use                       D.very well knows
32.The train to Sapa will arrive at Lao Cai Station at 9pm tomorrow.
A.The train                B.will arrive                 C.at              D.tomorrow arrives
33.Ms.Hanh is living with her parent at present.
A.Is living         B.with                C.parent          D.present
34.The children often doesn't lie down on the grass
A.often doesn't          B.lie down         C.on              D.the grass