سؤال ......يعادل زلزال بدرجة 10 على مقياس ريختر

[مستر مستر]

The Subjunctive is used after the following verbs:

to advise (that)
to ask (that)
to command (that)
to demand (that)
to desire (that)
to insist (that)
to propose (that)
to recommend (that)
to request (that)
to suggest (that)
to urge (that)