[ Grammar ]
The pupils told their teacher that _____ problems were too difficult to solve.
A. a
B. this
C. that
D. those

Random Topics:
Perfect TensesGerund and InfinitivesSimple Past Tense and Past Perfect TenseActive Voice-Present tenseTypes of SentencesSo - Too - Either - NeitherWill or Going toSimple PastSynonymPast Perfect SimpleOther quiz:
General Knowledge › View1.5 km = _______ m
A. .015
B. .00015
C. 150
D. 1500
Vocabulary › View
What are the main skills ………. for this job ?
A. require
B. required
C. requiring
D. requires
