![Grammar Quiz](https://grammarquiz.net/static3/logo.png)
[ Past Tenses ]
They __________ (monitor) the application when the system crashed.
A. monitored
B. was monitoring
C. had monitored
D. were monitoring
Select your answer:
![](https://grammarquiz.net/static3/wait.gif)
Random Topics:
Yes-No Question Personal Pronoun Present vs. Past Participle Because / soIf Conditional Zero and OneVerbs: Will & Going toTime and CalendarArticle the or zero article (-)Present Progressive or Present Simple
Other quiz:
Idioms › ViewThe other team beat us even though their best player wasn’t there.
a. canned
b. creamed
c. cooked
Reported Speech › View
I wonder________ we’ll catch the bus________ we’ll take a taxiể
A. if / and whether
B. whether / or that
C. if / or that
D. whether / or whether
How to use : Read the question carefully, then select one of the answers button.