The answers are in 5B below.
f ) 6
1. (of an arrangement, agreement, etc.) not definite or certain because you may want to change it later. E.g. We made a tentative arrangement to meet on Friday. Tentative conclusions. A tentative agreement. A tentative deal.
2. not behaving or done with confidence. Hesitant.E.g. a tentative greeting. Her English is correct but tentative. I'm taking the first tentative steps
towards fitness. Tentative ideas (to avoid being too direct with a
request. For example: I was wondering if I could borrow some money).
Note that the continuous aspect focuses on the action and its duration, rather than the result. It is used to show that an activity is temporary /ˈtemprəri/ and its duration is limited.
1 isn’t working
3 had been having
Drag: to pull somebody/something along with effort and difficulty. E.g. I dragged the chair over to the
4 is weighing
Tricky: difficult to do or deal with. E.g. a tricky situation. A tricky problem. That's a tricky question because there are many things to consider.
6 was looking
Look through something: to examine or read something quickly. E.g. She looked through her notes before the exam.
7 am talking
9 has been studying
10 am doing
1 Why are you crying?
2 How long had he been working there before they fired him? How long was he working there before they fired him?
Devastated: /ˈdevəsteɪtɪd/ extremely upset and shocked. Sp. desolado. E.g. His family is absolutely devastated.
3 What have you been doing since you graduated?
4 How long have you been living in Madrid?
5 Who were you talking to when I saw you earlier?
6 What did you want to be when you were a child?
7 Have you been waiting long?
8 Why didn’t you finish your degree?
Run out of: to use up or finish a supply of something. E.g. We ran out of fuel. Could I have a cigarette? I seem to have run out.
Tuition fees: the money that you pay to be taught, especially in a college or university.
6 and 8 have to use the simple form.
2 have been waiting. It is an unfinished action and emphasises the length of time.
4 am trying. It is an action in progress at this time.
5 had been expecting. It emphasises the length of time.
8 will have been living. It emphasises the length of time.
9 am/’m working. It refers to something still in progress.
10 was making. It talks about something that was in progress when I got home.