Answer:
a) Afterwards I'd read the manual, I found I could use the computer easily.
b) It was more than a month until I realized what had happened.
c) I managed to talk to Carol just as she was leaving.
d) It wasn't until 1983 that Nigel could afford to take holidays abroad.
e) George always let me know whenever he was going to be late.
f) I was having a bath at that time, so I didn't hear the doorbell.
g) We bought our tickets and five minutes later the train arrived.
h) According to Grandpa, people used to dress formally in his day.
i) Everyone was talking but stopped the moment Mr. Smith arrived.
j) The letter still hadn't arrived by the end of the week.
In each sentence, the correct word or phrase is underlined.
a) "Afterwards" is the correct word to use in this context as it indicates the sequence of events: reading the manual first, and then being able to use the computer easily.
b) "Until" is the correct word to use in this sentence as it implies a time period (more than a month) that passed before the realization occurred.
c) "Just as" is the correct phrase to use here as it shows the timing of the action (talking to Carol) happening at the exact moment she was leaving.
d) "Until" is the correct word to use in this sentence as it indicates the time when Nigel was finally able to afford holidays abroad (in 1983).
e) "Whenever" is the correct word to use here as it implies that George informs the speaker every time he is going to be late.
f) "At that time" is the correct phrase to use as it specifies the particular time (when the speaker was having a bath) when they did not hear the doorbell.
g) "Five minutes later" is the correct phrase to use as it denotes the time interval between buying the tickets and the train arriving.
h) "In his day" is the correct phrase to use here as it refers to a specific period of time (Grandpa's time) when people used to dress formally.
i) "The moment" is the correct phrase to use in this sentence as it emphasizes the specific time (when Mr. Smith arrived) when everyone stopped talking.
j) "By the end of the week" is the correct phrase to use here as it indicates the point in time (the end of the week) when the letter had not arrived yet.
Explanation: