He had scarcely reached the station _____ the train left.

• A. when (Answer)
• B. than
• C. before
• D. after

'Scarcely...when' and 'hardly...when' are fixed collocations for expressing that two events occurred almost simultaneously.

The bag is too heavy for me _____.

• A. carry
• B. carrying
• C. to carry (Answer)
• D. carried

'Too + adjective + for + object + to + infinitive' is the correct structure.

I have been learning French _____ I was ten.

• A. for
• B. since (Answer)
• C. from
• D. during

'Since' is used with a specific point in time. 'For' is used with a period of time.

He submitted his resignation _____ protest against the new policy.

• A. as
• B. in (Answer)
• C. for
• D. with

'In protest' is the correct prepositional phrase. He resigned in protest against the policy.

One should respect _____ elders.

• A. his
• B. their
• C. one's (Answer)
• D. our

When 'one' is the subject, the pronoun referring back to it should be 'one's'.

The students were made _____ the whole chapter.

• A. learned
• B. learn
• C. to learn (Answer)
• D. learning

In passive voice, 'make' is followed by 'to + infinitive'. In active: made them learn.

She is good _____ cooking.

• A. in
• B. for
• C. at (Answer)
• D. with

'Good at' is the correct preposition for skills and abilities.

The athlete ran _____ he could.

• A. as fast as (Answer)
• B. so fast as
• C. faster than
• D. the fastest

'As fast as' is used for equal comparison. 'As...as' shows two things are equal.

He took the medicine _____ the doctor prescribed.

• A. which (Answer)
• B. whose
• C. who
• D. whom

'Which' is used for things. 'Who' is used for persons. Medicine is a thing.

She congratulated me _____ passing the exam.

• A. for
• B. on (Answer)
• C. at
• D. with

'Congratulate on' is the correct collocation. We congratulate someone on an achievement.