Present perfect tense or Simple past

What's the tense for the following sentence? I dropped my eraser in the classroom.

• Simple present tense

• Simple past tense

• Present perfect tense

• Future tense

What's the tense for the following sentence?

I have told you three times already!

• Past tense

• Present continuous tense

• Future tense

• Present perfect tense

What is the time marker?

He has already erased the answer.

• has erased

• the answer

• already

• He

What is the time marker?

Jenny has left Hong Kong for 2 years.

• for 2 years

• has left

• Jenny

• Hong Kong

What is the time marker?

I haven't seen Miss Chan since 2015.

• haven't seen

• since 2015

• Miss Chan

• I

What is the time marker? It's Christmas Eve! We have just decorated our Christmas tree.

• Christmas Eve

• have decorated

• just

• Christmas tree

What is the time marker?

The deadline is today but I have not finished my project yet!

• deadline

• today

• have not finished

• yet

What is the tense of the following sentence?

McDull has fallen alseep for 10 minutes.

• Present perfect tense

• Simple past tense

• Present continuous tense

• Future tense

What is the tense of the following sentence?

The children lined up in the covered playground after recess.

• Present continuous tense

• Simple present tense

• Simple past tense

• Present perfect tense

What is the tense of the following sentence?

The boys played football in the pitch yesterday.

• Present continuous tense

• Simple present tense

• Simple past tense

• Present perfect tense