1. This train goes _______ to London. ( direct/directly )
2. She stood ________ on her convictions. ( firm/firmly )
3. The workers have decide to go ________. ( slow/slowly )
4. Hold the rope ________. ( tight/tightly )
5. This is the time ________ you should study hard. ( that/when )
6. Isn't there anyone who can write this ________? ( neat/neatly )