You mustn’t eat chewing-gum in the class.

She has been talking on the phone for an hour/ She has been on the phone for an hour.

He lives in Japan. However, he doesn’t speak Japanese.

Everyone still uses plastic bags in spite of knowing that they are extremely harmful for the environment. / Everyone still uses plastic bags in spite of the f

I must apologise to the woman whose phone I took by mistake.

She might have forgotten about our meeting.

He must have forgotten about our meeting.

By the end of June our wedding will have taken place.

The last time I had a holiday was a long time ago.

How long have you been studying French?/ How long have you studied French?

I have worked/have been working for Starbucks for three years.

Despite taking a taxi, Anne still arrived late for the concert/Despite the fact that Anne took a taxi, she still arrived late for the concert.

This woman who I told you about is an excellent comedian/ I told you about this woman who is an excellent comedian.