She volunteered ___ (help) organize the charity event to support the local community.
helping
to help
both are ok
They had fun ____ (explore) the city's hidden gems by taking long walks.
to explore
both
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
to concentrate
both are ok
concentrating
He had a tough time ____ (adjuste) to the new schedule after switching to night shifts.
both are ok
to adjust
adjusting
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
both are ok
to travel
What does the following sentence mean? David stopped going to the gym on Sundays.
He temporarily stopped and then continue
He permanently stopped doing the activity
What does the following sentence mean? Susan stopped to have a coffee.
She permanently stopped doing the activity
She temporarily stopped to do the activity and the continue
