He … check all the details with the technical team before the rocket launch.
A. have to
B. has to
C. might

Random Topics:
Grammar for TOEFLContinuous TensesFuture Tense - will and going toJobsTypes of PrepositionClausesTenses - Irregular VerbsWord Form & Verb TenseAuxiliary ModalSpellingOther quiz:
Mixed General Quiz › ViewThe largest number of Japanese outside of Japan ___ in an area called Bairro da Liberdade.
a. live
b. lives
c. living
Verb Tenses › View
Choose the sentence that uses the past perfect continuous tense correctly.
A. She had been waiting for two hours when he finally arrived.
B. She has been waiting for two hours when he finally arrived.
C. She was waiting for two hours when he finally arrived.
D. She waits for two hours when he finally arrived.
Grammar › ViewMary will wear this dress ______ .
A. when the graduation ceremony was held
B. after the graduation ceremony had been held
C. as the graduation ceremony is held
D. once the graduation ceremony was held
Compound Words and Sentences › View
The lamp needs a new ________________.
A. Lightbulb
B. Motorcycle
C. Laighbulb
D. Lighbulb
