[ Verb Tenses ]
We ______ (work) on this project all morning.
A. have worked
B. have been working

Random Topics:
Present Tenses and VocabularyGrammar of Future PlansGerund & InfinitivesWill vs Verb InfinitivesConditional TypesPresent Perfect SimplePossessive Adjective and PronounContrastive ConjunctionAdverb & Compound SentencesMiscellaneous Grammar UsagesOther quiz:
Vocabulary › ViewTo overcome the distrust of, win over
A. Badinage
B. Arrant
C. Conciliate
D. Lackadaisical
Grammar › View
Which word is an adjective?
We have twenty-three students.
A. twenty-three
B. students
The situation is difficult ______________.
A. for expain
B. explain
C. to explain
Grammar › View
Identify the active voice in the following sentences.
A. The cat chased the mouse.
B. The mouse was chased by the cat.
C. The mouse was being chased by the cat.
D. The mouse has been chased by the cat.
