1) ___ knowledge we gain from experience is very valuable. a) A b) The c) No article 2) He works as ___ engineer in ___ international company. a) a / an b) an / a c) an / an 3) She bought ___ phone yesterday, but ___ phone doesn’t work properly. a) a / a b) the / the c) a / the 4) ___ dogs are loyal animals and good companions. a) A b) The c) No article 5) He plays ___ guitar and listens to ___ music every day. a) the / the b) the / no article c) a / no article

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