[ Tenses ]
They ………………….. have been more careful with the project; now there are errors that could have been avoided.
A. could
B. would
C. should

Random Topics:
Frequency Adverbsused to, be used to, get used toThird Grade ExamAlthough / DespitePresent Simple & ContinuesHave toComparative and Superlative AdjectivesPhrasal Verb With TakeNouns, Articles, DeterminersAdverbial Concession ClausesOther quiz:
Prepositions › ViewSelect the correct alternative:
Get angry
A. Blow up
B. Blow down
C. Blow over
D. Blow out
E. Break in
Grammar › View
Was it raining ……..you arrived?
A. when
B. while