Questions

The phrase ‘could not be able’ needs to be replaced with ‘was not able’ to make the sentence correct. As the action has already taken place so use of modal is incorrect. Thus, the correct sentence would be, ‘She told her teacher that she was not able to attend the class the previous day because of heavy rains’.

Java is a general-purpose computer-programming language that is concurrent, class-based, object-oriented, and specifically designed to have as few implementation dependencies as possible.

Java is used to develop mobile apps, web apps, desktop apps, games and much more...

A bull in a china shop means one who is aggressive and clumsy in a situation that requires delicacy and care.

Tomorrow

The day before yesterday was two days ago; the day after the day before yesterday was yesterday; two days after that (yesterday) is tomorrow.

A computer system consists of a computer case, a power supply unit, a motherboard, a central processing unit (CPU), main memory, and a hard disk drive.

Input devices include a keyboard, mouse, microphone, video camera, and image scanner.

Output devices include a monitor, speakers, and a printer.

A vector quantity is a quantity which has both magnitude and direction. Here in the given options, speed is a scalar quantity but not the vector quantity.