[ 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:
Gerund vs. Infinitive › ViewCan gerunds be subjects?
A. Yes
B. No
Future Forms › View
Hi, Miyuki. __________________ anything at the weekend? – No, I’ve got nothing planned at the moment.
A. Are you doing
B. Will you do
C. Do you do
D. Are you going to do
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
