UNDERSEA WORLDA. PHONETICSI. CHOOSE THE WORD WHOSE UNDERLINED PART IS...

17) - BAI TAP TRAC NGHIEM TIENG ANH 10
BAI TAP TRAC NGHIEM TIENG ANH 10

17) I wonder where Mai is. She should ……….. here by now.

A. be

B. to be

C. being

D. is