My phone's____is 6.67 inches, which is quite big

Giúp với ạ :)) mai thi r
13. My phone's____is 6.67 inches, which is quite big.
A. screen    B.weight      C.gigabyte    D. memory
14.What____people doing when the UFO appeared?
A.is             B.are            C.was           D.were
15.Without modern science and_____ humans cannot travel to the moon.
A.technological     B.technician    C.slowlier       D.trechnologically
16.My mom cleans the floor____than a vacuum cleaner
A.more fastly        B.more slowly     C.slowlier     D.the slowliest
17.The robot can____the faces and voice off differerent people and respond to theis commands.
A.listen        B.react         C.recognize     D.create
18.I____home from worlk one night when a stange light____in the sky
A.was walking/was appaering                  B.walked/appeared
C.walked/was appearing                          D.was walking/appeared
   help meee :((