I am sorry I have forgotten [to lend / lend / lending*] you my textbook. Can I have it back?
Peter, did you remember [lock / locking / to lock*] the door? You are so absent-minded.
I wish the weather would get better. I am tired [about / of* / at] having to be indoors all the time.
I don't approve of your behavior. You'd better stop [quarreling* / to quarrel / quarrel] with everybody.
He was suspected [of* / in / at] concealing important information from the police.
The comedy was hilarious, but somehow I didn't feel like [laughing* / laugh / to laugh] .
Agatha, would you mind [being mailed / to mail / mailing*] this letter on your way home?
I am sorry [of / for* / about] having broken my promise.
The child hurt her leg badly and started to complain [at / of / about*] having severe pains in it.
Where do you and your friends plan [go / going / to go*] for the next summer vacations?
Janet was a wonderful dancer. I couldn't help [to be impressed / to impress / being impressed*] .
Lorna intended to help him [through* / on / while] lending him some money.
Anne was able to keep the kids still [on / instead of / by*] telling them an interesting story.
I am not at all sure if Arthur is really interested [learn / in learning* / to learn] the truth.
Let's get together tonight. I want to talk about [opening* / to open / open] a new business.
