[ Tenses ]
They …… frustrated when the students did not engage with the new rewards system.
A. must be
B. must was
C. must have been
D. must had been

Random Topics:
Grammar ClausesIndefinite and Reflexive PronounsGrammar: Simple Past and Past ContinuousVerbs & Phrasal VerbsDependent ClausesFunctional Sentence TypesReported Speech and SubjunctiveWishesPerfect Tenses of VerbsVerb PatternsOther quiz:
Grammar › ViewFill in the blank using the correct action word:
Lina is ____________ at the pond.
_
A. fishing
B. fished
C. fish
Vocabulary › View
open to attack; capable of being wounded or damaged; unprotected
A. crass
B. desecrate
C. inconsequential
D. vulnerable
Correlative Conjunction › ViewYou can either wear open-toe sandals … shoes to work at the office.
- or
- nor
Tenses › View
Mum … ill all week so she’s going to the doctor today.
A. was
B. is
C. has been
