4  Safe place (5)

 6  Wharf (4)

 8  Toward (2)

 9  A flowerless plant that reproduce by spores (4)

10 Literary contraction of "it is" (3)

11 Moving (6)

12 Metal in rocks (3)

13 Flannel shirt pattern (5)

16 An Australian eucalyptus (5)

18 Threw a party for (5)

20 Short for reservation (3)

21 A form of address to a judge in a court (3)

22 Band booking (3)

23 a durable cotton fabric (4)

24 13th letter of the Greek alphabet; Nν (2)

25 To overact (3)

26 "I'm impressed!" (3)

28 Symbol for the element astatine (2)

29 One, in Scotland (3)

30 Air pollution caused by volcanic emissions (3)

31 To cross out (2)

33 Reduce the difficulty (4)

34 16th Greek letter, used to represent 3.14…, π (2)

 2  To instruct privately (5)

 3  To join together (4)

 5  Stud site (4)

 6  (Chinese) a life force (2)

 7  Objective case of "we" (2)

 9  Chemical symbol for iron (2)

10 Zig or zag (4)

11 Ridiculed (6)

13 Game equipment (6)

14 Pair of sixes (5)

15 Gas that makes your voice high (6)

17 Promotion of some product or service (2)

19 Yank (3)

20 A mangy animal or person (6)

22 A pesty small winged insect (4)

25 Makes bales for the barn (4)

26 Moves briskly up and down or to and fro (4)

27 Tear up (4)

32 The 14th letter of the Greek alphabet, Ξ, ξ (2)