She volunteered ___ (help) organize the charity event to support the local community.
to help
helping
both are ok
They had fun ____ (explore) the city's hidden gems by taking long walks.
both
to explore
exploring
We had a good time ____ (hike) in the mountains, ______ (enjoy) the breathtaking views along the trail.
hiking, enjoying
to hike, to enjoy
both are ok
She has trouble _____ (concentrate) when studying in a noisy environment
concentrating
both are ok
to concentrate
He had a tough time ____ (adjuste) to the new schedule after switching to night shifts.
adjusting
both are ok
to adjust
They are busy ____ (organize) the event and ____ (coordinate) all the logistics and guest arrangements.
organizing, coordinating
both are ok
to organize, to coordinate
She worries about ____ (travel) alone, especially in unfamiliar places.
traveling
to travel
both are ok
What does the following sentence mean? David stopped going to the gym on Sundays.
He permanently stopped doing the activity
He temporarily stopped and then continue
What does the following sentence mean? Susan stopped to have a coffee.
She temporarily stopped to do the activity and the continue
She permanently stopped doing the activity
