[ Adverbial Clauses ]
Henry will certainly have finished his project ______ our voluntary campaign this summer.
A. when he joins
B. by the time he joined
C. while he is joining
D. as soon as he will join

Random Topics:
Present Tense vs Present ContinuousPast Simple and Past ProgressiveReflexive pronounsGrammar: so and suchSimple Present ProgressiveRelative PronounTensesFirst Conditional, Future Time ClausesPrepositions of TimeDegrees of ComparisonOther quiz:
Prepositions of Movement › ViewThe moon has risen ____ the horizon
A. above
B. within
C. alongside
D. around
Grammar and Vocabulary › View
Remember to turn off your ___________when they are not used.
A. household chores
B. household appliances
C. household finance
D. invitations
First & Second Conditional › ViewIf I want a new car, I ____ one.
A. will buy
B. would buy
C. buy
Adverb and Noun Clauses › View
Art critics do not all agree on what ______ a painting great.
A. qualities make
B. are the qualities for making
C. qualities to make
D. do the qualities that make
