[ Past Modals ]
As they entered the room where the empty safe was, Inspector Hall started looking for clues.
“If the robbers didn’t get in through the door, they ___ have found another way in,” he said.
A. must
B. can’t

Random Topics:
Relative & ModalsObject PronounsCity PlacesPassive Voice - Present ContinuousMiscellaneous Grammar UsagesAdverb or AdjectiveModal and Modal PerfectPast Perfect SimpleSimple Verb TensesGrammar - FutureOther quiz:
Vocabulary and Grammar › ViewJohn often goes to school _______ with his friends.
A. with bicycle
B. by foot
C. in car
D. by bus
Tenses › View
Which tense is used to talk about an action that happened at an unspecified time in the past?
A. Future tense
B. Past continuous tense
C. Simple past tense
D. Present perfect tense
Mixed General Quiz › ViewLas Alpujarras, a rocky area in Sierra Nevada National Park, is ___ relaxing and peaceful place to rest.
a. an
b. the
c. a
Adverb Clauses › View
What is the subordinating conjunction?
Because it was raining, we had to wait to run.
A. Because
B. Had
C. Wait
D. Run
