He ______ a diorama for the science fair with to-scale models of the planets, moons, and asteroids.
A. Designs
B. Had designed
C. Is designing
D. Was designing

Random Topics:
TOEFL GrammarInversion + Passive VoiceAdjectives and VocabularyNoun, Adjective, and Adverb ClausesConjunctive AdverbGrammar : Must (Necessity)Simple and Continuous TensesVerbs: Action, Linking, and HelpingGerund vs InfinitiveGrammar - TOEICOther quiz:
Grammar › ViewWhich type of sentence is shown below? The weather outside is very nice today.
A. simple
B. compound
C. complex
D. compound-complex
Subordinating Conjunctions › View
How do subordinating conjunctions differ from coordinating conjunctions?
A. Subordinating conjunctions and coordinating conjunctions serve the same purpose in a sentence.
B. Subordinating conjunctions connect independent clauses, while coordinating conjunctions introduce dependent clauses.
C. Subordinating conjunctions introduce independent clauses, while coordinating conjunctions connect dependent clauses.
D. Subordinating conjunctions introduce dependent clauses, while coordinating conjunctions connect independent clauses.
Grammar › ViewThe cat scratches _____ with its paw.
A. itself
B. himself
C. herself
D. yourself
Phrasal Verb › View
What does “look up” mean in a dictionary context?
A. ignore
B. search
C. refuse