Here you can find links to online exercises. These are grammar structures you need to know for Entry 3 level. There is lots of practice here. Let me know how you do.
MODAL VERBS– ABILITY

She can’t concentrate in the evening.
- images – (modal verbs of ability)
- video – (modal of ability)
- learnenglish (10Qs simple)
- agendaweb (10Qs simple)
- britishcouncil (8Qs beginners)
- testenglish (10 Qs beginners)
- perfectenglish (10Qs intermediate)
FUTURE FORMS

She’s going to watch a film later.
- images (future tense forms)
- video – (all forms funny video)
- elt-els (10 Qs mixed)
- englishclub (10Qs simple)
- e-grammar (10Qs will/won’t)
- agendaweb (17 exercise links)
- englisch-hilfen (10Qs sentences)
PAST CONTINUOUS

“The doorbell was still ringing…”
- Images (past continuous)
- video (4min past continuous)
- perfect-english (20Q pos & neg)
- englishclub (10Q various)
- TakeEnglish (10Q video quiz)
- englisch-hilfen (10Q past cont. or simp.)
- agendaweb (18 Ex. past continuous)