16. If the trainer had
(do) his part, the athletes would have won the contest
A do
B did
C does
D. done
17. If the Icacher had
(teach) the students well, they would have passed the exam
A taught
B. teach C teaches D. tcaching
18. Ir the old woman had (forget) her children, they should have helped her
remember
A forgot
B. forgotten C forgetting D. forget
19. If Nena had
(sing) well, she should have competed to the next level.
A sing
D. sings
20. Ir the motorist had
(wcar) a helmet, he could have survived the accident
A wore
B wom
D wears
B. sung
C. sang​