Verb Tenses Special Test

Verb tense review test, in which students must choose the correct use of verb tenses.
Language: English
Subject: English language > Verbs
Age: 17 - 18
Tags: simple present, simple past, present continuous, present perfect, future, present perfect coninuous, past perfect continuous, conditionals

CHOOSE THE ALTERNATIVE THAT CONTAINS NO MISTAKES
(CHECK THE CORRECT USE OF VERB TENSES):

By the time Lucy was eight, she had learned to play three musical instruments.

By the time Lucy was eight, she was learning to play three musical instruments.

I'm looking for my glasses. Did you see them?

I'm looking for my glasses. Have you seen them?