[ Modal Verbs ]
They ___ solve the puzzle after hours of trying.
A. could
B. were able to
C. should

Random Topics:
Modals and ConditionalsAdjectives vs AdverbsQuestion TagsPassive Voice Active VoiceTo infinitive - GerundPast and Present Continuous tenseArticles and PronounsInfinitive and GerundGrammar and EssayPast with ModalsOther quiz:
Passive Sentences › ViewThe old woman sells shoes.
A. Shoes are being sold by the old woman
B. Shoes have been sold by the old woman
C. Shoes are sold by the old woman
D. Shoes is sold by the old woman
Verb to Be Tenses & Object Pronoun › View
Complete the sentence with the correct form of ‘to be’ in future tense: They _______ be going to the beach next weekend.
A. were
B. will
C. are
D. is
Future - Will and Be going to › ViewI………………….to the cinema
A. going to
B. will go
C. go
D. am go
Grammar › View
We __________ (live) in the city, but now we live in the countryside.
A. used to
B. uses to
C. didn’t use to
D. did uses
