20. Lan studied hard, ______ she completed her exam successfully. A. although B. so C. because D. since 21. “I can’t find my wallet, Tom” –

20. Lan studied hard, ______ she completed her exam successfully.
A. although B. so C. because D. since
21. “I can’t find my wallet, Tom” – “Don’t worry. I’ll help you to ______ it”
A. look for B. take care of C. put on D. turn off
22. _______ he wasn’t invited, he went to the party.
A. Although B. Because C. So D. As
23. This is the place__________ I first met her.
A. what B. where C. which D. that
24. If I _________ as young as you are, I _________ in a boat round the world.
A. were – would sail B. would be – would sail
C. were – will sail D. would – would sail