Question

according to survey, thousands of vending machines has to be converted before new coins have come into circulation.is this sentence is right?if it rights so which type of sentence is this?​

Answer 1

Explanation:

Tenses Explanations:

Verb Tenses Chart

Tenses Exercises:

Mixed Tenses Exercises 1

Verb Tenses Exercises 2

Mixed Tenses Exercises 3

Mixed Tenses Exercises 4

Drag and Drop Exercises:

Suitable Tense Completion 1 (Beginners)

Suitable Tense Completion 2 (Beginners)

Suitable Tense Completion 3 (Intermediate)

Suitable Tense Completion 4 (Intermediate)

Suitable Tense Completion 5 (Advanced)

Other Drag & Drop Grammar Exercises

Also See:

All Tenses Exercises