Question

fill in the blanks with suitable preposition .
1. My mother work _____ the hospital
2.Ben's friend studied ________ the university

Answer 1

Explanation:

'To' is a preposition of movement. Eg. One travels to a restaurant but arrives at a restaurant.

'At' is used when the focus is on a particular place or a spot. Eg. I am at the party, we were at his house last night for dinner.

However when the focus is on the verb (here 'invited'), 'to' is more apt as a preposition. Therefore B is the correct option,

'In' is used to refer to the position of someone or something in large places like country, city, etc. Eg. We are in Hyderabad.

'Inside' is usually used to refer to small places. For Eg. Yancey called from inside the house. However 'in' and 'inside as prepositions are used when the focus is on the place. And 'at' is used when the focus is on a specific place. Therefore A, C, and D are incorrect,

Option B is the correct answer.

Answer 2

Answer:

1. in
2. on

Explanation:

Sine and cosine — a.k.a., sin(θ) and cos(θ) — are functions revealing the shape of a right triangle. Looking out from a vertex with angle θ, sin(θ) is the ratio of the opposite side to the hypotenuse , while cos(θ) is the ratio of the adjacent side to the hypotenuse .

Hope this is helpful for you