[ Subject Verb Agreement ]
The progress of the group of students ______ slowed by the weather.
A. was
B. were

Random Topics:
Prepositions of Location, Movement and TimePrepositions and AdverbsPresent Simple: affirmative, negative, interrogativeThings in EnglishSentences and Non SentencesComparisonsVocabulary and GrammarHas Got & Have GotTransitionsInfinitive or GerundOther quiz:
Lay vs. Lie › ViewI enjoy … under the sun at the beach.
(a) lying
(b) laying
Tenses › View
Choose the correct option to complete the gap.
He _______ his lunch when the doorbell rang.
A. is having
B. was having
C. has
Grammar › View______ of her good grades, Rebecca did not get accepted to Stanford.
A. As a result of
B. In spite of
C. Thereafter
D. On the other hand
Grammar › View
“Don´t spend so much money on these expensive clothes!” Mary said to Sam.
Mary told Sam …. so much money on … expensive clothes.
A. to not spend … those
B. not to spend … those
C. not spend … those