THEY COULDN’T STAY TO DINNER BECAUSE THE LAST BUS ... AT EIGHT O’...

44. - 3500 CAU TRAC NGHIEM ON TAP AV THCS 44. - 3500 CAU TRAC NGHIEM ON TAP AV THCS
3500 CAU TRAC NGHIEM ON TAP AV THCS

44. They couldn’t stay to dinner because the last bus ... at eight o’ clock.

a. left

b. has left

c. is leaving

d. will leave

 a