Question

Words and expressions workbook in english for class 9 solutions unit one

Answer 1

Answer:

English workbook for Class 9 solutions unit one consists of Verb Forms-

Simple Present and Present Perfect Tense. We use the simple present tense in order to talk about facts, general truths and habits. It implies all the universal and habitual actions that is happening in the present time.

For Example:   Ganga is a long river.

 Rohan is a good boy.

We use the present perfect tense to refer to an action which has taken place in the past but its effect still remains in the present.

For example:    They have done their homework.

 She has forgotten her mobile phone.

Answer 2

Answer:

how will the self driving cars or driverless cars be safe