Sat Instructress

مطلوب طالبه بكلية التربية أو الآداب انجلش للعمل بسنتر بالزقازيق بارت تايم
للتواصل 01000541517

We enjoyed the brilliant sunshine of the beach so much that day that when we left there was only one couple and one life guard still there .

Where is the incorrect part ?

Well, the tricky part here is called compound subject . It should go with plural verb . So, "was " is the incorrect part.